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Updated on: March 15, 2014  
     
  FACULTY - K. B. R. Varma, Professor & Chairman (Publications)  
 
 
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Last Updated: March 15, 2014
Default faculty mailing address: Materials Research Centre, Indian Institute of Science(IISc), Bangalore - 560012, INDIA.
Phone: Country code-91; Bangalore city code 80 from abroad and 080 from India.

 

K. B. R. Varma,
Professor & Chairman

Ph: +91-80-2293 2914
Fax: +91-80-2360 0683
E-mail: kbrvarma@mrc.iisc.ernet.in

Pages to be visited:
Profile
Research Areas
Publications
Research Group


Recent Publications:
  1. K. Praveena and K. B. R. Varma, Improved magneto-electric response in Na0.5Bi0.5TiO3MnFe2O4 composites, J. Mat. Sci.: Mat. Electr. 111 , 25 (2014)
  2. P. Thomas, R. S. Ernest Ravindran and K. B. R. Varma, Structural, thermal and electrical properties of poly(methyl methacrylate)/CaCu3Ti4O12 composite sheets fabricated via melt mixing, J. Therm. Anal. Calorim. 1311, 115 (2014)
  3. P. Bharathi and K. B. R. Varma, Effect of the Addition of B2O3 on the Density, Microstructure, Dielectric, Piezoelectric and Ferroelectric Properties of K0.5Na0.5NbO3 Ceramics, J. Electron. Mater. 493, 43 (2014)
  4. Swarup Kundu and K. B. R. Varma, Evolution of nanocrystalline Ba2NaNb5O15 in 2BaO-0.5Na2O-2.5Nb2O5-4.5B2O3 glass system and its refractive index and band gap tunability, Cryst. Growth Des. 585 , 14 [2] (2014)
  5. Swarup Kundu and K. B. R. Varma, Synthesis, structural and optical properties of nanocrystalline Ba2NaNb5O15, Cryst. Eng. Comm. 8887-93 , 15 [44] (2013)
  6. P. Thomas and K. B. R. Varma, Effect of TeO2 addition on the dielectric properties of CaCu3Ti4O12 ceramics derived from the oxalate precursor route, J. Adv. Dielect., 1350028, 03 [04] (2013)
  7. Gadige Paramesh and K. B. R. Varma, Mechanical properties of glasses and TiO2 nanocrystal glass composites in BaO-TiO2-B2O3 system, J. Non-Cryst. Solids, 128-134 , 380 (2013)
  8. P.Thomas, R.S.Ernest Ravindran, K. B. R. Varma, Fabrication and Characterization of Poly(methyl methacrylate)/ CaCu3Ti4O12 Composites, Poly. Eng. Sci. 1350028, 03 [04] (2013)
  9. Gadige Paramesh and K. B. R. Varma, Glass Anatase Nanocrystal Composites and their Crystallization Kinetics, Adv.Mater.Res. 622-623 , 950 (2013)
  10. K. Majhi, R. Vaish, G. Paramesh, K. B. R. Varma, Electrical transport characteristics of ZnO-Bi2O3-B2O3 glasses, Ionics, 99-104, 9 (1) (2013)
  11. S. Kumar, D. A. Ochoa, J. E. García, K. B. R. Varma, Nonlinear dielectric response of BaBi4Ti4O15 ceramics, AIP. Proc., 998-999 , 1512(1), (2013)
  12. Gadige Paramesh and K. B. R. Varma, Structure-Property Correlation in BaO-TiO2-B2O3 Glasses: Glass Stability, Optical, Hydrophobic and Dielectric Properties, Int.J. Appl. Glass Sci. 248-55 , 4 [3] (2013)

Career Publications:

  1. K. Praveena and K. B. R. Varma, Improved magneto-electric response in Na0.5Bi0.5TiO3MnFe2O4 composites, J. Mat. Sci.: Mat. Electr. 111 , 25 (2014)
  2. P. Thomas, R. S. Ernest Ravindran and K. B. R. Varma, Structural, thermal and electrical properties of poly(methyl methacrylate)/CaCu3Ti4O12 composite sheets fabricated via melt mixing, J. Therm. Anal. Calorim. 1311, 115 (2014)
  3. P. Bharathi and K. B. R. Varma, Effect of the Addition of B2O3 on the Density, Microstructure, Dielectric, Piezoelectric and Ferroelectric Properties of K0.5Na0.5NbO3 Ceramics, J. Electron. Mater. 493, 43 (2014)
  4. Swarup Kundu and K. B. R. Varma, Evolution of nanocrystalline Ba2NaNb5O15 in 2BaO-0.5Na2O-2.5Nb2O5-4.5B2O3 glass system and its refractive index and band gap tunability, Cryst. Growth Des. 585 , 14 [2] (2014)
  5. Swarup Kundu and K. B. R. Varma, Synthesis, structural and optical properties of nanocrystalline Ba2NaNb5O15, Cryst. Eng. Comm. 8887-93 , 15 [44] (2013)
  6. P. Thomas and K. B. R. Varma, Effect of TeO2 addition on the dielectric properties of CaCu3Ti4O12 ceramics derived from the oxalate precursor route, J. Adv. Dielect., 1350028, 03 [04] (2013)
  7. Gadige Paramesh and K. B. R. Varma, Mechanical properties of glasses and TiO2 nanocrystal glass composites in BaO-TiO2-B2O3 system, J. Non-Cryst. Solids, 128-134 , 380 (2013)
  8. P.Thomas, R.S.Ernest Ravindran, K. B. R. Varma, Fabrication and Characterization of Poly(methyl methacrylate)/ CaCu3Ti4O12 Composites, Poly. Eng. Sci. 1350028, 03 [04] (2013)
  9. Gadige Paramesh and K. B. R. Varma, Glass Anatase Nanocrystal Composites and their Crystallization Kinetics, Adv.Mater.Res. 622-623 , 950 (2013)
  10. K. Majhi, R. Vaish, G. Paramesh, K. B. R. Varma, Electrical transport characteristics of ZnO-Bi2O3-B2O3 glasses, Ionics, 99-104, 9 (1) (2013)
  11. S. Kumar, D. A. Ochoa, J. E. García, K. B. R. Varma, Nonlinear dielectric response of BaBi4Ti4O15 ceramics, AIP. Proc., 998-999 , 1512(1), (2013)
  12. Gadige Paramesh and K. B. R. Varma, Structure-Property Correlation in BaO-TiO2-B2O3 Glasses: Glass Stability, Optical, Hydrophobic and Dielectric Properties, Int.J. Appl. Glass Sci. 248-55 , 4 [3] (2013)
  13. K. R. S. Preethi Meher, C. Bogicevic, P.E. Janolin, K. B. R. Varma, Synthesis dependent characteristics of Sr1-xMnxTiO3 (x=0.03, 0.05, 0.07 and 0.09), J. Solid State Chem., 296-304, 192, (2012)
  14. G. Paramesh; K. B. R. Varma, Nanocrystallization of TiO2 Anatase Phase in Hydrophobic BaO-TiO2-B2O3 Glass System, J. Am. Ceram. Soc., 2876–2879 , 95 [9], (2012)
  15. G. Paramesh, N. Kumari, S. B. Krupanidhi, K. B. R. Varma, Large nonlinear refraction and two photon absorption in ferroelectric Bi2VO5.5 Thin films, Opt. Mater., 1822-1825 , 34, (2012)
  16. S. Kumar, D. A. Ochoa, J. E. García, K. B. R. Varma, Relaxor Ferroelectric Behavior and Structural Aspects of SrNaBi2Nb3O12 Ceramics, J. Am. Ceram. Soc., 1339-1342 , 95, (2012)
  17. C. Justin Raj, P. Bharathi, K. B. R. Varma, Simple coating technique for 2-dimensional zinc oxide nanostructure, Cryst. Res. Tech., 630-634 , 47, (2012)
  18. Rahul Vaish and K. B. R. Varma, Fabrication of Transparent BaNaB9O15Glass–Microcrystal Composites, J. Elec. Mat. 1996-2000 , 41 (7) (2012)
  19. P. Thomas, K. Dwarakanath, K. B. R. Varma, Effect of calcium stoichiometry on the dielectric response of CaCu3Ti4O12 ceramics, J. Eur. Ceram. Soc., , 1681-1690 , 32 (2012)
  20. S. Kumar, S. Kundu, D. A. Ochoa, J. E. Garcia, K. B. R. Varma, Raman scattering, microstructural and dielectric studies on Ba1-xCaxBi4Ti4O15 ceramics, Mater. Chem. Phy., , 680–687 , 136 (2012)
  21. P. Thomas, K. B. R. Varma, Structural and dielectric properties of glasses in the system TeO2-CaCu3Ti4O12, J. Adv. Dielectric, ,1250020 , 2, ( 2012)
  22. K.R.S.Preethi Meher, Rahul Vaish, J.Hou,Dalibor Krsmanovic, R.V.Kumar and K.B.R.Varma, Structural and relaxor characteristics of Ca0.18Sr0.226Ba0.594Nb2O6, Int.J.Mater.Res. ,168-174 , 104, (2013)
  23. G. Paramesh, K. B. R. Varma, Nonlinear refraction and two-photon absorption in dense 2Bi2O3-B2O3 glasses, AIP. Proc., , 603-604 , 1447 (2012)
  24. K. R. S. Preethi Meher, P.E. Janolin, N. Guiblin; G. Paramesh; K. B. R. Varma, High temperature phase transition studies and dielectric properties of Sr2SbMnO6, AIP. Proc., , 137-138 , 1447 (2012)
  25. P. Thomas; E. Ravindranan; K. B. R. Varma, Dielectric properties of Poly (methyl methacrylate) (PMMA)/ CaCu3Ti4O12 composites IEEE-DEIS, , 1 - 4 , 2012
  26. Rahul Vaish and K. B. R. Varma, Dielectric behavior of sodium borate glasses, Ionics, , 727–731, 17(8), (2011)
  27. G.Paramesh, N. Kumari, S. B. Krupanidhi and K. B. R. Varma, Laser induced nano structured periodic patterns in ferroelectric bismuth vanadate thin films, J. of intense pulsed lasers and app in adv phys , 53-57 , 1(3) (2011)
  28. C. Justin Raj, Rakesh K. Joshi and K. B. R. Varma, Synthesis from zinc oxalate, growth mechanism and optical properties of ZnO nano/micro structures, Cryst. Res. and Technol, , 1181–1188 , 46 (11) (2011)
  29. C. Justin Raj, Swarup Kundu and K. B. R. Varma, Investigation of Dielectric, piezoelectric and ferroelectric properties of b-axis grown triglycine sulphate single crystal, Appl. Phys. A, , 1025-1031 , 105, (2011)
  30. G.Paramesh and K. B. R. Varma, Near constant loss dielectric response in 2Bi2O3-B2O3 glasses, Int. J. Appl. Glass Sci. , 235-242 , 2 (3) (2011)
  31. Rahul Vaish and K. B. R. Varma, Electrical transport studies in 3Na2O-6.5B2O3 glasses, J. Adv.Diel. ,1-6 , 1(3) (2011)
  32. Sunil Kumar and K. B. R. Varma, Dielectric relaxation in bismuth layer-structured BaBi4¬Ti4O15 ferroelectric ceramics, Curr. Appl. Phy. ,203-210, 11(2), (2011)
  33. S. Satapathy, Prabha Varma, P. K. Gupta, C. Mukherjee, V. G. Sathe, K. B. R. Varma, Structural, dielectric and ferroelectric properties of multilayer lithium tantalate thin films prepared by sol-gel technique., Thin Solid Films, ,1803-1808 , 519(6), (2011)
  34. G.Paramesh, Rahul Vaish and K. B. R. Varma, Electrical transport properties of 0.5Li2O-0.5M2O-2B2O3 (M=Li, Na and K) glasses, J.Non-cryst.Solids ,1479-1484 , 357(5), (2011)
  35. Rahul Vaish and K. B. R. Varma, Linear Optical Properties of BaNaB9O15, BaLiB9O15 and SrLiB9O15 Glasses, J.Non-cryst.Solids ,1485–1487, 357(5), (2011)
  36. Rahul Vaish and K. B. R. Varma, Electrical relaxation and transport in 0.5Cs2O-0.5Li2O-3B2O3 glasses. IEEE trans. diel. and Ele. Insulation ,155-161 (1), (2011)
  37. Sunil Kumar, K. B. R. Varma, Crystal structure and electrical properties of CaNaBi2Nb3O12 ceramics, J.Mater.Sci. ,2606-2610 46 (8), (2011)
  38. Neelam Kumari, S.B. Krupanidhi, K. B. R. Varma, Structural and electrical studies on Bi2VO5.5/Bi4Ti3O12 multilayer thin films. J. Mater. Sci: Mater. El ,639 22 (6), (2011)
  39. Rahul Vaish, M. Niyaz Ahamad and K. B. R. Varma, Calorimetric studies on 2TeO2-V2O5 glasses, J. Therm. Anal. Cal. ,239-243 105(1), (2011)
  40. S. Satapathy, Santosh Pawar, P. K. Gupta, and K. B. R. Varma, Effect of annealing on the phase transition in poly (vinylidene fluoride) films prepared using polar solvent. Bull. Mater. Sci ,727-733 34(4), (2011)
  41. Antara Baral, K.R.S. Preethi Meher and K. B. R. Varma, Dielectric relaxation behaviour of Sr2SbMnO6 ceramics fabricated from nanocrystalline powders prepared by molten salt synthesis. Bull. Mater. Sci, ,53-60 34(4), (2011)
  42. Koushik Majhi and K. B. R. Varma, Dielectric relaxation in CaO-Bi2O3-B2O3 glasses. Int. J. Appl. Ceram.Tech. , E89-E97 7, (2010)
  43. R. Vaish, V. Rodriguez, M. Maglione, J. Etourneau and K. B. R. Varma, Laser Induced Periodic Surface Crystalline Patterns on SrO-0.5Li2O-4.5B2O3 and BaO-0.5Na2O-4.5B2O3 Glasses and Optical Second Harmonic Generation. Int. J. Appl. Glass. Sci., , 350-357 1(4) (2010)
  44. Neelam Kumari, K. B. R. Varma and S.B. Krupanidhi, Structural and electrical characterization of Bi2VO5.5/Bi4Ti3O12 bilayer thin films deposited by pulsed laser ablation technique. Nat. Sci , 1073-1078 2(10), (2010)
  45. Neelam Kumari, K.B.R.Varma and S.B.Krupanidhi, Structural, optical and electrical characteristics of transparent bismuth vanadate films deposited on indium tin oxide coated glass substrates, J.Mater.Sci.:Mater.Electr. 1107 , 21 (2010)
  46. P.Thomas, S.Sathapathy, K.Dwarakanath, and K. B. R. Varma, Dielectric properties of Poly(vinylidene fluoride)/ CaCu3Ti4O12 nanocrystal composite thick films, Express.Polym.Lett. 632, 4 (2010)
  47. C. Justin Raj and K. B. R. Varma, Synthesis and electrical properties of the (PVA) 0.7(KI) 0.3xH2SO4 (0=x=5) polymer electrolytes and their performance in a primary Zn/MnO2 battery, Electrochim. Acta 649 , 56 (2010)
  48. Rahul Vaish and K. B. R. Varma, Dielectric and Electrical Conductivity Relaxation in 0.5Li2O-0.5Na2O-2B2O3 Glasses, J.Electron. Mater. 1334 , 39 (2010)
  49. Jungang Hou, Yuanfang Qu, Rahul Vaish, K. B. R. Varma, Dalibor Krsmanovic, R.Vasant Kumar, Crystallographic Evolution, Dielectric, and Piezoelectric Properties of Bi4Ti3O12:W/Cr Ceramics, J.Am.Ceram.Soc. 1414 ,93 (2010)
  50. Rahul Vaish and K. B. R. Varma, The glass forming ability and thermal stability of MO-0.5M2O-4.5B2O3 (M=Ba, Sr and M=Li, M=Ba and M=Na) glasses, Phys. Chem. Glasses 159, 51 (2010)
  51. G.Paramesh, K.R.S.Preethi Meher, M.Niyaz Ahmed and K.B.R.Varma, Dielectric and impedance studies on 0.5Li2O-0.5K2O-2B2O3 glasses, Integr. Ferroelectr 95, 118 (2010)
  52. Sunil Kumar and K. B. R. Varma, Structural, dielectric and ferroelectric properties of four-layer Aurivillius phase Na0.5La0.5Bi4Ti4O15, Mater. Sci. Eng: B 177, 172 (2010)
  53. Jungang Houa, Rahul Vaish, Yuanfang Qu, Dalibor Krsmanovic, K. B. R. Varma, R.V.Kumar, Dielectric relaxation and electrical conductivity in Bi5NbO10 oxygen ion conductors prepared by a modified sol–gel process, J Power Source 2613, 195 (2010)
  54. Jungang Houa, Rahul Vaisha, Yuanfang Qu, Dalibor Krsmanovic, K.B.R.Varma, R.V. Kumar, Dielectric, pyroelectric and ferroelectric properties of Bi4Ti2.98Nb0.01Ta0.01O12 ceramics, Mater. Chem. and Phys. 32 , 121 (2010)
  55. K.R.S. Preethi Meher, M. Savinov, S. Kamba, V. Goian,and K. B. R.Varma, Structural, dielectric and magnetic properties of Sr2TiMnO6, J. Appl. Phys, 094108 , 108 (2010)
  56. M. Niyaz Ahamad and K. B. R. Varma, Dielectric properties of (100-x)Li2B4O7–x(Ba5Li2Ti2Nb8O30) glasses and glass nanocrystal composites, Mater. Sci. and Eng :B 193,167 (2010)
  57. P. Thomas, K. T. Varughese, K. Dwarakanath and K. B. R. Varma, Dielectric properties of Poly(vinylidene fluoride)/CaCu3Ti4O12 composites, Compos. Sci. technol, 539, 70 (2010)
  58. Sunil Kumar and K. B. R.Varma, Dielectric, Ferroelectric and Relaxor Behavior of BaLaxBi4-xTi4O15 Ceramics, Adv. Sci. Lett. 20 , 3 (2010)
  59. Neelam Kumari, S.B. Krupanidhi and K. B. R. Varma, Spectroscopic ellipsometry investigations of the optical properties of manganese doped bismuth vanadate thin films, Mater. Res. Bull, 464 , 45 (2010)
  60. M. Niyaz Ahamad and K. B. R. Varma, Structural and optical properties of (100-x)Li2B4O7–x(Ba5Li2Ti2Nb8O30) glasses and glass nanocrystal composites. Dalton. Trans., 4624 , 39 (2010)
  61. Koushik Majhi and K. B. R. Varma, Textured ferroelectric SrBi2Nb2O9 phase in SrBi2B2O7-Nb2O5 system and its anisotropic dielectric and pyroelectric properties. J. Electroceram. 70 ,25 (2010)
  62. Koushik Majhi and K. B. R. Varma Crystallization kinetics of SrBi2B2O7 glasses by non-isothermal methods. J. Therm. Anal. Cal. 731–736 ,98 (2009)
  63. Rahul Vaish and K. B. R. Varma, The glass transition and crystallization kinetic studies on BaNaB9O15 glasses. J. Phys. D: Appl. Phys. 1 , 42 (2009)
  64. M. Niyaz Ahamad and K. B. R. Varma, Optical Properties of Nanocrystalline Potassium Lithium Niobate in the Glass System (100-x) TeO2–x(1.5K2O–Li2O– 2.5Nb2O5). J. Nanosci. Nanotechno. 4910 ,9 (2009)
  65. Rahul Vaish and K. B. R. Varma, Dielectric Relaxation in SrLiB9O15 Glasses. J Electro Chem Soc., G17 ,156 (2009)
  66. Koushik Majhi and K. B. R. Varma, Crystallization kinetic studies of CaBi2B2O7 glasses by non-isothermal methods. J Mater Sci 385 ,44 (2009)
  67. S Satapathy, P K Gupta and K. B. R. Varma, Enhancement of nonvolatile polarization and pyroelectric sensitivity in lithium tantalate (LT)/poly(vinylidene fluoride) (PVDF) nanocomposite. J. Phys. D: Appl. Phys. 1 , 42 (2009)
  68. K.R.S. Preethi Meher and K.B.R.Varma, Bi4Ti3O12-5BiFeO3 Aurivillius intergrowth: structural and ferroelectric properties. J. Appl. Phys. 124103-1, 106 (2009)
  69. K. R. S. Preethi Meher and K. B. R. Varma, Colossal dielectric behavior of semiconducting Sr2TiMnO6 ceramics. J. Appl. Phys. 034113-1, 105 (2009)
  70. Sunil Kumar and K. B. R. Varma, Influence of lanthanum doping on the dielectric, ferroelectric and relaxor behaviour of barium bismuth titanate ceramics. J. Phys. D: Appl. Phys. 1 ,42(2009)
  71. P. Thomas, K. Dwarakanath, K. B. R. Varma and T. R. N. Kutty Synthesis of nanoparticles of the giant dielectric material, CaCu3Ti4O12 from a precursor route. J. Therm. Anal. Cal., 267 ,95 (2009)
  72. Rahul Vaish and K B R Varma, Influence of seeding on crystallization behaviour of BaNaB9O15 glasses, Bull. Mater. Sci., 93, 32 (2009)
  73. Rahul Vaish and K.B.R. Varma, Thermal properties of 3BaO-3TiO2-B2O3 glasses, Phil. Mag A 1555,89 (2009)
  74. Rahul Vaish and K.B.R. Varma, Crystallization Kinetics and Electrical Relaxation of BaO-0.5Li2O-4.5B2O3 Glasses, J. Am. Ceram. Soc., 1993, 92 (2009)
  75. Rahul Vaish and K. B. R. Varma, Thermal Characteristics of SrO-2B2O3 Glasses, Adv. Sci. Lett. 319 ,2 (2009)
  76. Rahul Vaish and K. B. R. Varma, Dielectric properties of Li2O-3B2O3 glasses, J. Appl. Phys. 064106-1,106 (2009)
  77. M. Niyaz Ahamad, A. Vasudevarao, Venkatraman Gopalan, Himanshu Jain, K. B. R. Varma, Temperature dependent blue second harmonic generation in Ba5Li2Ti2Nb8O30 microcrystals embedded in TeO2 glass–matrix, J. Non-Cryst. Solids 1517–1520, 355 (2009)
  78. Koushik Majhi, K. B. R. Varma, Structural, dielectric, impedance and optical properties of CaBi2B2O7 glasses and glass-nanocrystal composites. Mater.Chem. and Phy. 494,117 (2009)
  79. P. Thomas, K. Dwarakanath, K. B. R. Varma, In situ synthesis and characterization of polyaniline-CaCu3Ti4O12 nanocrystal composites, Synthetic Met 2128 ,159 (2009)
  80. B. Harihara Venkataramana, T. Fujiwara, K.B.R. Varma, T. Komatsu, Influence of Sm2O3 doping on formation and structure of SrBi2Nb2O9 nanocrystals in lithium borate glasses. Mater.Chem. and Phy. 244, 117 (2009)
  81. Niyaz Ahamad Madhar and Kalidhindi B. R. Varma, Spinodal Decomposition in Tellurite-Based Glasses Induced by Excimer Laser Irradiation, J. Am. Ceram. Soc., 2609 ,92 (2009)
  82. Koushik Majhi, K. B. R. Varma, and K. J. Rao, Possible mechanism of charge transport and dielectric relaxation in SrO-Bi2O3-B2O3 glasses, J. Appl. Phys. 084106-1, 106 (2009)
  83. Antara Baral, K. B. R. Varma, Low temperature molten-salt synthesis of nanocrystalline cubic Sr2SbMnO6., J. Solid. State. Chem. 3282, 182 (2009)
  84. Rahul Vaish and K. B. R. Varma, Low loss and frequency (1 kHz-1 MHz) independent dielectric characteristics of 3BaO-3TiO2-B2O3 glasses, J. Appl. Phys. 114109-1 ,106 (2009)
  85. Satyendra Singh, Neelam Kumari, K. B. R. Varma and S.B. Krupanidhi, Synthesis, structural characterization and formation mechanism of ferroelectric bismuth vanadate nanotubes, J. Nanosci. Nanotechnol. 6549, 9 (2009)
  86. B. Shri Prakash and K. B. R. Varma, Molten salt synthesis of nanocrystalline phase of high dielectric constant material CaCu3Ti4O12, J.Nanosci. Nanotechnol. 1 ,8 (2008)
  87. B. Shriprakash, M. Maglione, D. Micheau and K. B. R. Varma, Dielectric and impedance characteristics of CaCu3Ti4O12 thin films deposited on Pt (111) /Ti/ SiO2/ Si(100) substrates using RF – magnetron sputtering, Thin solid films. 2874 ,516 (2008)
  88. C. Karthik and K. B. R. Varma, Dielectric and pyroelectric anisotropy in melt-quenched BaBi2(Nb1-xVx)2O9 ceramic, Mater. Res. Bull. 3026 ,43 (2008)
  89. Rahul Vaish and K.B.R. Varma, Crystallization kinetics of SrLiB9O15 glasses by differential thermal analysis, Phys. Chem. Glasses 334 , 49 (2008)
  90. B. Shri Prakash and K. B. R. Varma, Effect of sintering conditions on the microstructural, dielectric, ferroelectric and varistor properties of CaCu3Ti4O12 and Lu2/CaCu3Ti4O12 ceramics belonging to the high and low dielectric constant members of ACu3M4O12 (A=alkali, alkaline-earth metal, rare-earth metal or vacancy, M=transition metal) family of oxides, Physica B 2246, 403 (2008)
  91. S. Shylaja, N. Mahendra Kadidal, K. B. R. Varma, T. Narasimhamurthy and R.S. Rathore, Hydrogen-bonded sheets in 2-(2-aminophenyl)-1H-benzimidazol-3-ium dihydrogen phosphate, Acta.Cryst. CC 361 ,64 (2008)
  92. Rahul Vaish and K. B. R. Varma, The effect of ultrasonic treatment on glass crystallization kinetic parameters of BaNaB9O15 glasses, J. Am. Ceram. Soc. 1952 ,91 (2008)
  93. Neelam Kumari, S.B. Krupanidhi and K. B. R. Varma, Structural, ferroelectric and optical properties of Bi2VO5.5 thin-films deposited on platinized silicon {(200)Pt/ TiO2/SiO2/Si}substrates, Appl.Phys. A-Mater 693, 91 (2008)
  94. Sunil Kumar and K. B. R. Varma, Structure and dielectric properties of Bi4Ti2Nb0.5Fe0.5O12 ceramics. Solid State Comm. 137 , 146 (2008)
  95. P.Thomas, K.Dwarakanath, K. B. R. Varma and T. R. N. Kutty Nanoparticles of the giant dielectric material CaCu3Ti4O12 from a precursor route, J. Phys. Chem. Solids., 2594-2604 , 69 (2008)
  96. Koushik Majhi and K. B. R. Varma, Structural, dielectric and optical properties of transparent glasses and glass-Ceramics of SrBi2B2O7, J. Non Cryst. Solids, 4543 ,354 (2008)
  97. Rahul Vaish and K. B. R. Varma, The dielectric and electrical conductivity characteristics of BaNaB9O15 glasses, J. Phys D: Appl. Phys. 1 ,41 (2008)
  98. Sunil Kumar and K. B. R. Varma Relaxor behavior of BaBi4Ti3Fe0.5Nb0.5O15 ceramics. Solid State Comm. 457 , 147 (2008)
  99. S. Satapathy, Puja Soni, P. K. Gupta, V. K. Dubey and K. B. R. Varma, Design and fabrication of dual mode pyroelectric sensor: high sensitive energy meter for Nd:YAG laser and detector for choped He-Ne laser, Sensors & Transducers, 61 ,92 (2008)
  100. Neelam Kumari, S.B. Krupanidhi and K. B. R. Varma, Structural, optical and ac conduction properties of Bi2V1-xNbxO5.5 (0=x=0.4) thin films fabricated by pulsed laser deposition technique, Mater Sci. Eng. B. 152 , 36-46 (2008)
  101. Kaushik Das, C. Karthik, K.B.R. Varma and U. Ramamurty, Nano- and micro-indentation studies on lithium borate–barium bismuth niobate glasses, J. Non Cryst. Solids. 354 , 3793-3798 (2008)
  102. S. Satapathy, P. K. Gupta, and K. B. R. Varma, Pragya Tiwari and V. Ganeshan, Study on dielectric behaviour of Lithium Tantalate (LT) nano particle filled Poly vilinyledene flouriede (PVDF) nano composites, International Publishing House Pvt. Ltd Volume-II 509 , (2008)
  103. C. Karthik, M. Niyaz Ahmad, B. Harihara Venkataraman, N. Syam Prasad, G. Senthil Murugan and K. B. R. Varma, A review chapter on “Multifarious transparent glass nanocrystal composites" in a book entitled “Photonic Glasses and Glass-ceramics” Publisher: Research Signpost, , (2008)
  104. B. Harihara Venkataraman and K. B. R. Varma , A review chapter on "multifunctional glass nano/microcrystal composites" in a book entitled “Hard Nanomaterials” , (2008),
  105. C. Karthik, M. Maglione and K. B. R. Varma, Relaxor characteristics of layered Ba1-(3/2)xLaxBi2Nb2O9 ceramics J. Appl. Phys. 014106-1-014106-6,101(2007)
  106. C. Karthik and K. B. R. Varma, Evolution of nanocrystalline BaBi2Nb2O9 in Li2B4O7–BaO–Bi2O3–Nb2O5 glass system, J. Non Cryst. Solids 1307-1310 ,353(2007)
  107. B. Shriprakash and K. B. R. Varma , The influence of segregation Cu-rich phase on the microstrucurtal and impedance characteristics of CaCu3Ti4O12 ceramics. J.Mater. Sci 7467-7477 ,42(2007)
  108. B. Shriprakash and K. B. R. Varma, Influence of sintering conditions and doping on the dielectric relaxation originating from the surface layer effects in CaCu3Ti4O12 ceramics , J. Phys. Chem. Solids , 490-502,68(2007).
  109. Neelam K, S. B. Krupanidhi and K. B. R. Varma , Dielectric, impedance and ferroelectric characteristics of c-oriented bismuth vanadate films grown by pulsed laser deposition Mater. Sci. Eng. B 22-30 , 138(2007)
  110. B. Shri Prakash and K. B. R. Varma, Dielectric behavior of CaCu3Ti4O12-epoxy and aluminium-CaCu3Ti4O12–epoxy composites, Compos. Sci. Technol 2363-2368 , 67(2007)
  111. .
  112. B. Shri Prakash and K. B. R. Varma, Effect of the addition of B2O3 and BaO-B2O3-SiO2 glasses on the microstructure and dielectric properties of giant dielectric constant material CaCu3Ti4O12. J. Solid State Chem., 1918-1927 , 180 (2007)
  113. .
  114. M. Niyaz Ahamad, Shimtaro Mizuno, Takyuki Komatsu and K. B. R. Varma, Nanocrystalline pattering of K3Li2Nb5O15 on TeO2 glasses by excimer laser, J. Cryst. Growth 270-274 , 304(2007)
  115. .
  116. C. Karthik and K. B. R. Varma, Dielectric and pyroelectric anisotropy in melt quenched barium bismuth niobate ceramics , J. Electro Ceram. 347-353 , 18(2007)
  117. .
  118. Rahul Vaish and K. B. R. Varma, Glass transition and crystallization kinetics of CsLiB6O10 glasses by differential scanning calorimery, J. Cryst. Growth 477-482 , 307(2007)
  119. .
  120. S. Satapathy, P. K. Gupta, Himanshu Srivastava, A. K. Srivastava, V. K. Wadhawan, K. B. R. Varma and V.G. Sathe, Effect of capping ligands on the synthesis and on the physical properties of the nanoparticles of LiTaO3, J. Cryst. Growth 185-191 , 307(2007)
  121. .
  122. B. Shri Prakash and K. B. R. Varma, Ferroelectriclike and pyroelectric behavior CaCu3Ti4O12 ceramics Appl. Phys. Lett. 082903-1-08903-3 , 90 (2007)
  123. .
  124. P.Thomas L.N.Satapathy, K.Dwarakanath and K. B. R. Varma, Microwave processing and dielectric properties of CaCu3Ti4O12 ceramics, Bull. Mater. 567-570 , 30(2007)
  125. .
  126. Koushik Majhi, B. Shri Prakash and K. B. R. Varma, Extreme values of relative permittivity and dielectric relaxation in Sr2SbMnO6 ceramics, J. Phys D Appl. Phys 7128-7135 , 40(2007)
  127. .
  128. C. Karthik and K. B. R. Varma , Thermal, structural, optical, and dielectric properties of (100-x)Li2B4O7–x(BaO-Bi2O3-Nb2O5) glasses and glass-nanocrystal composites, J. Nanosci. Nanotechnol. 1006–1013 , 7(2007)
  129. .
  130. B.Harihara Venkataraman and K. B. R. Varma, Electrical properties of SrBi2(Nb0.7V0.3)2O9-? in the SrO-Bi2O3-0.7 Nb2O5-0.3 V2O5-Li2B4O7 glass system, J. Non Cryst. Solids 695-699, 352(2006)
  131. Neelam kumari, Jayanta Parui, K. B. R. Varma and S.B. Krupanidhi, C–V studies on metal ferroelectric bismuth vanadate (Bi2VO5.5) semiconductor structure Solid.State. Comm 566-569 , 137(2006)
  132. .
  133. C. Karthik and K. B. R. Varma, Influence of vanadium doping on the processing temperature and dielectric properties of barium bismuth niobate ceramics, Mater. Sci. and Eng. B 245-250 ,129(2006)
  134. .
  135. B. Shri Prakash and K. B. R. Varma, Effect of sintering conditions on the dielectric properties of CaCu3Ti4O12 and La2/3Cu3Ti4O12 ceramics: A comparative study, Physica B 312-319 , 382(2006)
  136. .
  137. S. Satapathy and K. B. R. Varma, Orientated nano grain growth and effect of annealing on gain size in LiTaO3 thin films deposited by sol-gel technique J. Cryst. Growth 232-238 , 291(2006)
  138. .
  139. B.Harihara Venkataraman and K. B. R. Varma, Structural and optical properties of Li2B4O7-SrO-Bi2O3-0.7Nb2O5-0.3V2O5 glasses and glass nanocrystalcomposites, Optical Mater. 1423-1431 , 28(2006)
  140. .
  141. C. Karthik and K. B. R. Varma, Dielectric and ac conductivity behaviour of BaBi2Nb2O9 ceramics, J. Phys. Chem. Solids , 2437-2441 , 6(2006)
  142. .
  143. B. Shriprakash and K. B. R. Varma, Microstructural and dielectric properties of donor doped (La3+) CaCu3Ti4O12 Ceramics, J. Mater. Sci. Mater. in Electr. 899-907,17(2006)
  144. .
  145. C. Karthik, N. Ravishankar, M. Maglione, R. Vondermuhll, J. Etourneau and K. B. R. Varma, Relaxor behavior of K0.5La0.5Bi2Nb2O9 ceramics, Appl. Phys. Lett. 042905-1-042905-3 , 89(2006)
  146. .
  147. C. Karthik, N. Ravishankar, M. Maglione, R. Vondermuhll, J. Etourneau and K. B. R. Varma, Relaxor behavior of K0.5La0.5Bi2Ta2O9 ceramics, Solid State Comm. 268-272 , 139(2006)
  148. .
  149. B. Harihara Venkataraman and K. B. R. Varma, Structural, dielectric, pyroelectric and ferroelectric properties of glass nano composite: lithium borate-strontium bismuth vanadium niobate, Ferroelectric Lett. 39-56,33(2006)
  150. .
  151. M. Niyaz Ahamad and K. B. R. Varma, Crystallization, dielectric and optical characteristics of TeO2-K2O-Li2O-Nb2O5 glasses , Phys. Chem. Glasses 659 , 47(2006)
  152. .
  153. B.Harihara Venkataraman and K. B. R. Varma, Microstructural, dielectric, impedance and electric modulus studies on vanadium doped and pure strontium bismuth niobate (SrBi2Nb2O9 ) ceramics J. Mater. Sci. Mater. in Electr. 335 - 344 ,16(2005)
  154. .
  155. B. Harihara Venkataraman and K. B. R. Varma, Frequency dependent dielectric characteristics of undoped and vanadium doped SrBi2Nb2O9 ferroelectric ceramics: a comparative study, Ferroelectrics 129 –143 , 324(2005)
  156. .
  157. B. Harihara Venkataraman and K. B. R Varma, The microstructural, dielectric, pyroelectric and ferroelectric properties of SrBi2(Nb1-xVx)2O9 ( 0=x=0.3 ) ceramics Ferroelectrics 45 – 60 , 315(2005)
  158. ,
  159. N. Syam Prasad and K. B. R. Varma, Crystallization kinetics of the LiBO2 – Nb2O5 glass using differential thermal analysis, , J. Am. Ceram. Soc , 357 - 361 , 88(2005)
  160. .
  161. N. Syam Prasad and K. B. R.Varma, Evolution of ferroelectric LiNbO3 phase in a reactive glass matrix (LiBO2 – Nb2O5) J. Non-Cryst. Solids 1455 – 1465 , 351(2005)
  162. .
  163. B.Harihara Venkataraman and K. B. R. Varma, The influence of microscopic parameters on the ionic conductivity of SrBi2(Nb1-xVx)2O9- (0=x=0.3) ceramics J. Phys. Chem. Solids 1640 – 1646 , 66(2005)
  164. .
  165. B. Harihara Venkataraman, K. B. R. Varma, V. Rodriguez, M. Maglione and J. Etourneau, Optical diffraction of second harmonic generation in SrBi2(Nb0.7V0.3)2O9 in the SrO–Bi2O3–0.7Nb2O5–0.3V2O5–Li2B4O7 glass system, J. Synth. Metals 434- 438 , 155(2005)
  166. .
  167. B. Harihara Venkataraman and K. B. R. Varma, Nanocrystallization of ferroelectric strontium bismuth vanadium niobate in Lithium tetraborate glasses, J. Nanosci. Nanotechnol. 2108 - 2116 , 2108 - 2116
  168. .
  169. B. Harihara Venkataraman, N. Syam Prasad, K. B. R. Varma, V. Rodriguez, M. Maglione, R. Vondemuhll and J. Etourneau, Optical diffraction of second harmonic signals in the LiBO2 -Nb2O5 glasses induced by self organised LiNbO3 crystallites, Appl. Phys. Lett 091113 , 87(2005)
  170. .
  171. C. Karthik, N.Ravishankar and K. B. R. Varma, Structural and dielectric properties of SrBi2-xPbxNb2O9-x/2 (0 = x = 2) , Ferroelectrics , 113-119 ,324(2005)
  172. .
  173. R.N. Rai and K. B. R. Varma, Growth and characterization of single crystal of pentachloropyridine, J. Cryst. growth 111 – 116 , 285(2005)
  174. .
  175. C. Karthik, N.Ravishankar and K. B. R. Varma, Transmission electron microscopy studies of domain structures in ferroelectric SrBi2Nb2O9 ceramics Mater. Res. Soc. Symp. Proc. 3.10.1 – 3.10.6 ,839(2005)
  176. .
  177. B. Harihara Venkataraman and K. B. R. Varma, Frequency dependent dielectric characteristics of ferroelectric SrBi2Nb2O9 Ceramics Solid State Ionics. 197 – 202 ,167(2004)
  178. .
  179. Pratap Mukherjee and K. B. R. Varma Crystallization and physical properties of LiTaO3 in a reactive glass matrix (LiBO2- Ta2O5). Ferroelectrics 129 – 143, , 306 (2004)
  180. N. Syam Prasad and K. B. R. Varma Structural and dielectric properties of ferroelectric Sr1-xBaxBi2 (Nb0.5Ta0.5)2O9 and Sr0.5Ba0.5Bi2(Nb1-yTay)2O9 ceramics. Mat. Res. Bull 195-206 , 38 (2003)
  181. N. Syam Prasad, K. B. R. Varma, Y. Takahashi, Y. Benino, T. Fujiwara and T. Komatsu Evolution and characterization of fluorite-like nano SrBi2Nb2O9 phase in the SrO-Bi2O3-Nb2O5-Li2B4O7 glass system. J. Solid State Chem. 209-215 , 173 (2003)
  182. N. Syam Prasad and K. B. R.Varma Crystallization, dielectric, polar and optical characteristics of Li2B4O7-SrO-Bi2O3-Nb2O5 glasses and glass nanocomposites. Phys. Chem. Glasses-European Journal of Glass Science and Technology Part B 1-11 , 44(5) (2003)
  183. B. Harihara Venkataraman and K. B. R. Varma Impedance and dielectric studies of ferroelectric SrBi2Nb2O9 ceramics. J. Phys. Chem. Solids 2105-2112 , 64 (2003)
  184. B. Harihara Venkataraman and K. B. R. Varma Grain orientation and anisotropy in the physical properties of SrBi2(Nb1- xVx)2O9 (0=x =0.3) ceramics. J. Mater. Sci. 4895-4903 , 38 (2003)
  185. K. Y. Sandhya, C. K. S. Pillai , K. Sreekumar and K. B. R. Varma Structural and dielectric studies on poly (L-Lithocholic acid). J. Polym. Mater. 303-308 , 19 (3) (2002)
  186. Yoshiro Takahashi, Yasuhiko Benino, Takumi Fujiwara K. B. R. Varma and Takayuki Komatsu New transparent crystallized glasses with optical nonlinear LiBGeO4 crystals. J. Ceram. Soc. Jpn. 32- 36 , 110 (2002)
  187. G. Senthil Murugan and K. B. R. Varma Structural, thermal, dielectric and optical properties of Li2B4O7 – SrBi2Ta2O9 glasses. Phys. Chem. Glasses, 47-51 , 43 (2002)
  188. Pyroelectric, ferroelectric and optical properties of glass nanocomposites lithium borate-bismuth tungstate.G. Senthil Murugan and K. B. R. Varma Ferroelectrics, 259-275 , 266 (2002)
  189. G. Senthil Murugan and K. B. R. Varma Lithium borate-strontium bismuth tantalate glass nanocomposite: A novel material for nonlinear optic and ferroelectric applications J .Mater. Chem. 1426-1436 , 12 (2002)
  190. G. Senthil Murugan and K. B. R. Varma Microstructural, dielectric, pyroelectric and ferroelectric studies on partially grain oriented SrBi2Ta2O9 ceramics. J. Electroceramics, 37 - 48 , 8 (2002)
  191. N. Syam Prasad , G.N. Subbanna and K. B. R. Varma. Evolution of ferroelectric SrBi2Nb2O9 phase in the Li2B4O7-SrO-Bi2O3-Nb2O5 glass system. Ferroelectrics, 135-150 281 , (2002)
  192. R. N. Rai, U. S. Rai, and K. B. R. Varma Thermal miscibility gap and microstructural studies of organic analog of metal-nonmetal system:p-dibromobenzene – succinonitrile. Thermochem. Acta 101-107 , 387 (2002)
  193. N. Syam Prasad and K. B. R. Varma Nanocrystallization of SrBi¬2Nb2O9 from glasses in the system Li2B4O7-SrO-Bi2O3-Nb2O5. Mater. Sci. Eng. B 246-253 , 90 ( 2002)
  194. K.Shantha and K. B. R. Varma Bismuth vanadate : a versatile ferroelectric material. Hand Book of Advanced Electronic and Photonic Materials, Ed : H.S. Nalwa, Academic Press, 115-138 , 4 (2001)
  195. R. N. Rai and K. B. R. Varma Thermal and dielectric studies on binary organic system: Benzil-m-Nitroaniline. Mater. Lett. 356 – 361 , 48 (2001)
  196. R. N. Rai, T.S. Panchapagesan and K. B. R. Varma Microstructural and dielectric properties of hot pressed organic composite: benzil-4- aminobenzophenone. J. Mater. Sci: Mater. El 505 - 509 ,12 (2001)
  197. G.S. Murugan and K. B. R. Varma Characterization of lithium borate-bismuth tungstate glasses and glass-ceramics by impedance spectroscopy. Solid State Ionics, 105-112 , 139 ( 2001)
  198. G.Senthil Murugan and K. B. R. Varma, Dielectric, linear and nonlinear optical properties of lithium borate bismuth tungstate glasses and glass-ceramics. J. Non – Cryst. Solids 1-13 ,279 (2001)
  199. N. Syam Prasad , G. N. Subbanna and K. B. R. Varma Glass nanocomposite of strontium bismuth niobate and lithium borate: Structural and dielectric investigations. Mater. Lett, 11-19 , 47 (2001)
  200. N.Syam Prasad, K. B. R. Varma and S. B. Lang Dielectric anomaly in strontium borate-bismuth vanadate glass nanocomposite. J.Phys. Chem. solids, 1299-1311 ,62 (2001)
  201. N. Syam Prasad and K. B. R. Varma Dielectric, structural and ferroelectric properties of strontium borate glasses containing nanocrystalline bismuth vanadate. J. Mater. Chem., 1912 – 1918 ,11 (2001)
  202. N. Syam Prasad and K. B. R. Varma Phase evolution, characterization, and impedance spectroscopic analysis of nanocrystalline SrBi2Nb2O9 in glassy Li2B4O7 matrix. J. Nanosci. Nanotech, 425 – 432 , 1 (2001)
  203. G.Senthil Murugan K. B. R. Varma, Yoshihiro Takahashi and Takayuki Komatsu Non-linear optic and ferroelectric lithium borate – strontium bismuth tantalite glass-ceramic composites. Appl. Phys. Lett, 4019-4021 ,78 (2001)
  204. K. Shantha and K. B. R. Varma Characterisation of fine grained ceramics obtained using nanosized powders of bismuth vanadate. J. Am. Ceram. Soc., 1122-1128 ,83 (2000)
  205. P. Ramaswamy, S. Seetharamu, N. Raman, K. B. R. Varma and K.J. Rao Thermo mechanical fatigue characterization of 8% Y2O3-ZrO2 and mullet thermal barrier coatings and performance evaluation in diesel engine. Proceedings of Inst. Mech. Engineers, 729 - 742 , 214 (2000)
  206. R. N. Rai and K. B. R. Varma Phase diagram and dielectric studies of binary organic materials. Mater. Lett., 284-293 ,44 (2000)
  207. M.Thirumal, A.K. Ganguli, G. Senthil Murugan and K. B. R. Varma Ba3ZnTa2-xNbxO9 and Ba3MgTa2-xNbxO9: Synthesis, structural and dielectric studies. Mater. Res. Bull 2423 – 2430 , 35 (2000)
  208. P. Ramaswamy, S. Seetharamu, K. B. R. Varma, and K.J. Rao Evaluation of CaO-CeO2 – partially stabilized zirconia thermal barrier coatings. Ceram. Int 317-324 , 25 (1999)
  209. K. Sooryanarayana, T.N. Guru Row, and K. B. R. Varma Structural phase transitions Bi2V1-XGeXO5..5-X/2(X=0.2, 0.4 and 0.6) single crystals: X-ray crystallographic study. Mater. Res. Bull., 425 – 432 ,34 (1999)
  210. K. Shantha, G.N. Subbanna and K. B. R. Varma Mechanically activated synthesis of nanocrystalline powders of ferroelectric bismuth vanadate. Solid State Chem., 41-47 ,142 (1999)
  211. M.V. Shankar and K. B. R. Varma Dielectric and optical properties of surface crystallized TeO2-LiNbO3 glasses. J. Non-Cryst. Solids, 192-203 , 243 (1999)
  212. .
  213. M.V. Shankar and K. B. R. Varma Structural, dielectric and optical properties of SrB4O7-BaO-TiO2 glasses. Phys. Chem. Glasses, 44-47 ,40 (1999)
  214. P. Ramaswamy, S. Seetharamu, K. B. R. Varma and K.J. Rao, Thermal barrier coating application of zircon sand. Therm. Spray. Techn., 447-453 , 8 (1999)
  215. K. Shantha and K. B. R. Varma, Preparation and characterization of nanocrystalline powders of bismuth vanadate by mechanical activation. Mater. Sci. Eng. B, 66-75 ,60 (1999)
  216. G. S. Murugan and K. B. R. Varma, Structural, dielectric and optical properties of Li2B4O7 and Bi2WO6 glass ceramics. Mater. Res. Bull., 2201-2213 ,34 (1999)
  217. G.S. Murugan, G.N. Subbanna and K. B. R. Varma Anomalous dielectric behaviour in melt quenched lithium borate glasses. Ferroelectrics Lett., 1-16 ,26 (1999)
  218. K. Shantha and K. B. R. Varma, Diffused phase transition in fine-grained bismuth vanadate ceramics. J. Mater. Res. 4651-4656, 14 (1999)
  219. G. S. Murugan, G.N. Subbanna and K. B. R. Varma Nanocrystallization of ferroelectrics bismuth unstated in lithium borate glass matrix. Mater. Sci. Lett., 1687-1690 ,18 (1999)
  220. M.V. Shankar and K. B. R. Varma Multifunctional glass nanocomposites of layer-structured ferroelectrics. SPIE Proceedings (Society of photo-optical Instrumentation Engineers) (1999)
  221. K. Shantha, and K. B. R. Varma Dielectric, piezoelectric and pyroelectric anisotropy in KCl-modified grain-oriented bismuth vanadate ceramics. J. Mater. Res., 1-11 , 13 (1998)
  222. M. V. Shankar and K. B. R. Varma Crystallization of ferroelectric bismuth vanadate in Bi2O3-V2O5-SrB4O7 glasses. J. Non-Cryst. Solids., 145-154 , 226 (1998)
  223. K. Sooryanarayana, T.N. Gururow, R. Somashekar and K. B. R. Varma Influence of inherent strain on the Curie temperature of rare earth ion-doped bismuth vanadate. Bull. Mater. Sci. 499-502 ,21 (1998)
  224. P. Ramaswamy, S. Seetharamu, K.B.R.Varma, and K.J. Rao Thermal shock characteristics of plasma sprayed mullite coatings. Therm. Spray. Techn., 497-504 ,7 (1998)
  225. M.V. Shankar and K.B.R. Varma Crystallization, dielectric and optical studies on strontium tetraborate glasses containing bismuth titanate. Mater. Res. Bull., 1769 –1782 , 33 (1998)
  226. M.V. Shankar and K. B. R. Varma Non-linear optical effects in surface crystallized 0.50 TeO2-0.50 LiNbO3 glasses. Applications of Photonic Technology, Vol.2, (ed.G.A). Lampropoulos and R.A. lessardeds.), Plenum Publ., NY, 55-60 (1997)
  227. K. Shantha, S. Philip and K. B. R. Varma Effect of KCl addition on the microstructural and dielectric properties of bismuth vanadate ceramics. Mater. Chem. Phys., 48-51 , 48 (1997)
  228. S. K. Ramasesha, A.K. Singh and K. B. R. Varma Effect of pressure on the dielectric and ferroelectric properties of bismuth vanadate. Mater. Chem. Phys., 136-139 , 48 (1997)
  229. P. Ramaswamy, S. Seetharamu, K. B. R. Varma, and K. J. Rao Al2O3-ZrO2 composite coatings for thermal barrier applications Compos. Sci. Technol., 81-89 , 57 (1997)
  230. M.V. Shankar and K. B. R. Varma Piezoelectrically stimulated dielectric dispersion in KAP single crystals. Mater. Chem. Phys. 78-82 , 49 (1997)
  231. K. Shantha and K. B. R. Varma Frequency dependence of the dielectric property of ferroelectric Bi2VO5.5 ceramics. Solid State Ionics, 225-231 , 99 (1997)
  232. M.V. Shankar, K. B. R. Varma, R.T. Bailey, F.R Cruickshank, D. Pugh and J.N. Sherwood Dielectric dispersion and piezoelectric resonance in an organic electro-optic crystal: 2 - methylbenzylamino-5-nitropyridine. Appl. Phys., 2370-2374 , 81 (1997)
  233. K. Shantha, and K. B. R. Varma Microstructural and dielectric properties of KCl added bismuth vanadate ceramics. Mater. Chem., 1565-1571 , 7 (1997)
  234. K. Sooryanarayana, T.N. Guru Row and K. B. R. Varma Crystal structure of ferroelectric Bi2VO5.5. Mater. Res. Bull., 1651-1656 , 32 (1997)
  235. K. Shantha, and K.B.R. Varma Fabrication and characterization of grain-oriented bismuth vanadate ceramics. Mater. Res. Bull., 1581-1591 , 32 (1997)
  236. M.V. Shankar G.N. Subbanna and K.B.R. Varma SrB4O7 : Bi2VO5.5-a novel nanocomposite. Bull. Mater. Sci., 931-936 , 18 (1996)
  237. M.V. Shankar and K.B.R. Varma Piezoelectric resonance in KAP single crystals. Ferroelectrics Lett., 55-59 , 21 (1996)
  238. K. B. R. Varma, M.V. Shankar and G.N. Subbanna Structural and dielectric characteristics of strontium tetraborate-bismuth vanadate glass-ceramic. Mater. Res. Bull., 475-482, 31(5) (1996)
  239. M. Viswanathan, G. K. M. Thutupalli and K. B. R. Varma Structural and optical properties of R.F. sputtered Bi2VO5.5 thin-films. Solid State Commun., 535-538 , 98 (1996)
  240. M.V. Shankar and K. B. R. Varma Dielectric and optical characteristics of strontium tetraborate glasses. Mater. Sci. Lett., 858-860 , 15 (1996)
  241. Selvarajan and K. B. R. Varma Growth and characterisation of single crystal cored fibers of organic non-linear optical materials. SPIE Proceedings (society for Photo-Optical Instrumentation Engineers), 45-49 , 2851 (1996)
  242. K. B. R. Varma A versatile Bridgman-Stockbarger crystal growth system for nonlinear optical materials. Advances in Instrumentation, Tata McGraw-Hill (New Delhi). 828-833 (1996)
  243. M. V. Shankar and K. B. R. Varma Dielectric dispersion induced by piezoelectric resonance-in Benzil single crystals grown by Bridgman-Stockbarger technique. Bull. Mater. Sci., 791-798 , 19 (1996)
  244. K. B. R. Varma and K. V. R. Prasad Structural and dielectric properties of Bi2NbxV1-xO5.5 ceramics. J. Mater. Res., 2288-2292 , 11 (1996)
  245. P. Ramaswamy, S. Sitaramu, K. B. R. Varma and K. J. Rao A simple method for the preparation of plasma sprayable powder on ZrO2. J.Mater. Sci., 6325-6332 , 31 (1996)
  246. K. B. R. Varma and M. V. Shankar Synthesis and characterisation of novel Bi2O3 – TiO2 –SrB4O7 glasses. IEEE Proceedings on Applications of Ferroelectrics, 813-816 (1996)
  247. M.V. Shankar and K. B. R. Varma Structural and dielectric characteristics of Bi2O3-V2O5-SrB4O7 glass-ceramics. IEEE Proceedings on Applications of Ferroelectrics, 817-820 (1996)
  248. K. V. R. Prasad, G.N. Subbanna and K. B. R. Varma Rare earth substituted bismuth vanadate ceramics. Ferroelectrics, 223-234 , 166 (1995)
  249. K. V. R. Prasad and K. B. R. Varma Dielectric anisotropy in partially grain–oriented Bi2VO5.5 ceramics. Active and Passive Electronic Components, 137-144 , 18 (1995)
  250. K.M. Satyalakshmi, K. B. R. Varma and M.S. Hegde Ferroelectric properties of Bi2VO5.5 thin films on LaAlO3 and SiO2/Si substrates with LaNiO3 base electrodes. J. Appl. Phys. 1160-1164 , 78 (1995)
  251. A. K. Ganguli, K. P. Jayadevan, G. N. Subbanna and K. B. R. Varma Preparation and dielectric properties of zinc and cadmium doped barium tantalates,Ba3Zn1-XCdXTa2O9. Solid State Commun., 13-16 , 94 (1995)
  252. K.V.R Prasad and K. B. R. Varma High temperature X-ray structural, thermal and dielectric characteristics of ferroelectric Bi2 VO5.5. J. Mater. Sci., 6345-6349 , 30 (1995)
  253. R. Balasubramanina, A. Selvarajan and K. B. R. Varma Growth and characterisation of single crystal cored fibers (SCCF) of novel nonlinear organic optical materials. J. Cryst. Growth 140-144 , 151 (1995)
  254. R.T. Bailey, F.R. Cruickshank, D. Pugh, J.N. Sherwood, S. Wilkie and K. B. R. Varma Nonlinear optical behaviour of fish-scales. Ferroelectrics, 293-299 , 168 (1995)
  255. V. Sharma, K. B. R. Varma and A.K. Shukla Structural and dielectric properties of a novel Bi2O3-(1-x) WO3-x CuO solid solution. Bull. Mater. Sci., 631-636 ,18 (1995)
  256. K.V.R. Prasad and K. B. R. Varma Dielectric and domain structural properties of Bi2GexV(1-x)O5.5-x/2 single crystals. Ferroelectrics, 205-210 , 158 (1994)
  257. M.V. Shankar, K. B. R. Varma, G.V.R. Sharma, A. Srikrishna, B.R. Prasad C.K. Subramanian and P.S. Narayanan Microstructural and non-linear optical properties of hot-pressed ethoxy methoxy chalcone (EMC). Ferroelectrics, 141-146 , 156 (1994)
  258. R.T. Bailey, G.H. Bourhill, F.R. Cruickshank, D. Pugh, J.N. Sherwood, G.S. Simpson and K. B. R. Varma Linear-electro-optic dispersion in (-)-2-(?-methyl benzylamino)-5- nitrophyridine (MBANP) single crystals. J. Appl. Phys., 489-492 , 75 (1994)
  259. K.V.R. Prasad and K. B. R. Varma Domain structure of Bi2GexV(1-x)O5.5-x/2 single crystals. Mater. Sci. Lett., 215-218 , 13(1994)
  260. K.V. R. Prasad, K. M. Sathyalakshmi, K. B. R. Varma, R.M. Mallya and M. S. Hegde, Structure and ferroelectric properties of Bi2VO5.5 thin films by laser deposition. Ferroelectrics, 61-66 , 152(1994)
  261. K.V.R. Prasad, A.R. Raju and K. B. R. Varma Grain size effects on the dielectric properties of ferroelectric Bi2VO5.5 ceramics. J. Mater. Sci., 2691-2696 , 29(1994)
  262. K. V. R. Prasad, G. N. Subbanna andK. B. R. Varma Characterisation of coprecipitated ferroelectric Bi2VO5.5. Bull. Mater. Sci., 299-306 , 17 (1994)
  263. M.V. Shankar, K. B. R. Varma. T.J. Reddy and A. Srikrishna Growth and Characterisation of organic NLO crystals (Benzil and EMC). SPIE proceedings (Society for Photo-optical Instrumentation Engineers, 63-66 (1994)
  264. K.V.R. Prasad and K. B. R. Varma Dielectric, thermal and pyroelectric properties of ferroelectric bismuth vanadate single crystals. < a href=http://dx.doi.org/10.1016/0254-0584(94)90222-4>Mater. Chem. Phys., 406-401 , 38 (1994)
  265. K.V.R. Prasad, G.N. Subbanna and K. B. R. Varma Effect of rare-earth (Gd and Nd) doping on the structural and dielectric properties of ferroelectric Bi2 VO5.5. Bull. Bismuth Inst., 3-6 , 67 (1994)
  266. K.V.R. Prasad, M.V. Shankar, G.N. Subbanna and K. B. R. Varma Principles of SEM for structural characterization. Handbook of Advanced Materials Testing, Marcell and Dekker Inc., USA, 51-64 (1994)
  267. R. Balasubramaninan, K. B. R. Varma and A. Selvarajan Growth and characterisation of single crystal cored fibres of organic non-linear optical materials. SPIE Proceedings (Society for Photo-Optical Instrumentation Engineers), 67-70, (1994)
  268. S.K. Ramasesha, K.V.R. Prasad, M.V. Shankar and K. B. R. Varma The dielectric properties of Bi2 VO5.5 under pressure. Advances in High Pressure Science and Technology, ed. A.K. Singh Tata McGraw-Hill, New Delhi, 85-92 (1994)
  269. D. Prasad Beesabathina, L. Salamanca-ribs, M. S. Hegde, K. M. Sathyalakshmi, K. V. R. Prasad and K. B. R. Varma Microstructural studies of ferroelectric Bi2VO5.5 thin films with LaNiO3 electrodes. Mater. Res. Soc. Symp. Proc., 399-404 341, (1994)
  270. K. V. R. Prasad, K. B. R. Varma, A.R. Raju, K. M. Sathyalakshmi, R. M. Mallya and M. S. Hegde Growth and ferroelectric properties of Bi2VO5.5 thin films with metallic LaNiO3 electrode, Appl. Phys. Lett. 1898-1900 (1993), 63
  271. R. T. Bailey, G. H. Bourhill, F. R. Cruickshank, D. Pugh, J. N. Sherwood, G. S. Simpson and K. B. R. Varma The linear electro-optic effect in 4-nitro-4?methyl benzylidene aniline single crystals. Mol. Cryst. Liq. Cryst. 95-99(1992), 217,
  272. R. T. Bailey, G. H. Bourhill, F.R. Cruickshank, D. Pugh, J.N. Sherwood, G.S. Simpson and K. B. R. Varma Linear electro-optic effect and temperature coefficient of birefringence in 4-nitro-4-methyl benzylidene aniline single crystals. J. Appl. Phys. 2012-2014 (1992), , 71
  273. K.V.R. Prasad and K. B. R. Varma Effect of V2O5 on the surface and structural characteristics of potassium lithium niobate. Mater. Sci. Lett. 1019 -1022 (1991), 10,
  274. K.V.R. Prasad and K. B. R. Varma Pyroelectric properties of Bi2VO5.5 ceramic, J.Phys D: Appl. Phys. 1858-1860 (1991), 24,
  275. R. T. Bailey, G. H. Bourhill, F.R. Cruickshank, D. Pugh, J. N. Sherwood, G. S. Simpson and K. B. R. Varma Linear electro-optic properties of 4-nitro-4?methyl benzylidene aniline single crystals, SPIE Proceedings (Society of Phot-optical Instrumentation Engineers), Tata McGraw Hill, , 9-12 (1991)
  276. K. B. R Varma Czochralski technique of growing crystals from the melt, Instr. Soc. India. 90-92(1990), ,20 (1),
  277. K. B. R. Varma Morphology and dielectric properties of fish scales, Curr. Sci. India. ,420-422 (1990), 59,
  278. K. B. R. Varma, and K.V.R. Prasad The effect of CrO4 2- ions on the electro-optic properties of KDP single crystals, Phys. D: Appl. Phys.b. ,1723-1726 (1990), ,23,
  279. K. B. R. Varma, G.N. Subbanna, T.N. Guru Row and C.N.R. Rao Synthesis and characterization of bismuth vanadates, J. Mater, Res. , 2718-2722 (1990) 5,
  280. K. B. R. Varma K.J. Rao and C.N.R. Rao Novel features of rapidly-quenched melts of Bi2(Ca,Sr)3Cu2O8+? Appl. Phys. Lett. ,69-71 (1989) 54,
  281. K. B. R Varma and A.K. Raychaudhuri Pyroelectric and dielectric properties of potassium hydrogen phthalate single crystals, Phys, D: Appl. Phys. , 809-811 (1989) 22,
  282. K. B. R. Varma, G.N. Subbanna, T.V. Ramakrishnan and C.N.R. Rao Dielectric properties of glasses prepared by quenching melts of superconducting Bi-Ca-Sr-Cu-O cuprates, Appl. Phys. Lett. , 75-77 (1989), 55,
  283. K. B. R. Varma, G.N.Subbanna, T.V. Ramakrishnan and C.N.R. Rao Novel dielectric properties of glasses prepared by quenching melts of Bi-Ca-Sr-Cu-O cuprates, Physica C, ,891-892 (1989) 162,
  284. K. B. R. Varma, K.J. Rao and C. N. R. Rao Dielectric behaviour of amorphous thin films Order-disorder in the Solid State. Ed. H.K. Henisch, 131-141 (1988), Plenum Publishing Corporation
  285. S. Anantharaj, K. B. R. Varma and K. J. Rao Electrical properties of silver pyrophosphate glass, Solid State Ionics. 5-9(1988) 27,
  286. K. Murthy, K. B. R. Varma, S. V. Bhat and C. N. R. Rao Microwave absorption by single crystals of superconducting Bi2(Ca, Sr)3O8, Mod. Phys. Lett B, 2, 1259-1262(1988) 27,
  287. K. B. R. Varma, A.R. Raju and K.J. Rao Physico-chemical properties of pure and x-ray irradiated single crystal of KAP, Cryst. Res. Tech. 23, 185-193 (1988)
  288. K. J. Rao, K. B. R. Varma and A. R. Raju Light element ceramics 73-87 (1988), 13
  289. K. B. R. Varma Twin-roller quenching technique and preparation of glasses of high melting ionic Solids, Bull. Mater. Sci. 1-5 (1987), 9.
  290. S. Anantharai, K. B. R. Varma and K.J. Rao Thermal properties of Silver Pyrophosphate – Anomalously high glass heat capacities, Mater. Res. Bull. 1369-1374(1986) 21,
  291. K. B. R. Varma, K. S. Harshavardhan, K.J. Rao and C.N.R. Rao Ferroelectric-like dielectric anomaly in FE-sputtered amorphous LiNbO3 films, Mater, Res. Bull. 1369 (1985), 21,
  292. K. V. Ramanaiah and K. B. R. Varma Dispersion of photo-elastic constants in doped KDP crystals, Bull Mater, Sci. 147-152 (1983), 5,
  293. K. V. Ramanaiah and K. B. R. Varma Effect of additives and dopants on the growth of KDP crystals, Ind. J. Pur. Appl. Phys., 388-390 (1983), 21,
  294. K. B. R. Varma, K. V. Ramanaiah and K. V. Rao Linear electroptic effect in doped KDP crystals Bull. Mater Sci. 39-48 (1983) 5,
  295. K.B.R. Varma and K. V. Ramanaiah Growth and electro-optic properties of (NH4)xK1-xH2PO4 single crystals Bull. Mater. Sci., 307-313 (1981) 3,

Conference Presentations:

  1. Dielectric and impedance studies on 0.5Li2O-0.5K2O-2B2O3 glasses
    G.paramesh, K.R.S. Preethi Meher, Niyaz Ahmed Madhar and K. B. R. Varma
    International Conference on Electro-Ceramics (ICE-2009)
    Delhi University ,New Delhi, India
  2. Ferroelectric and Magnetic Properties of Bi4Ti3O12-mBiFeO3 Solid Solutions and Its Modification with La Doping
    K.R.S.Preethi Meher, G.paramesh, Niyaz Ahmed Madhar and K. B. R. Varma
    International Conference on Electro-Ceramics (ICE-2009)
    Delhi University ,New Delhi,India
  3. Dielectric Relaxation in the Te2V2O9 Ceramics
    M.Niyaz Ahmed, G.Paramesh, K.R.S.Preethi Meher and K. B. R. Varma
    International Conference on Electro-Ceramics (ICE-2009)
    Delhi University ,New Delhi,India
  4. Structural, dielectric and ferroelectric properties of a new four-layer Aurivillius phase Na0.5La0.5Bi4Ti4O15.
    Sunil Kumar and K. B. R. Varma
    International Conference on Electroceramics (ICE-2009),
    Delhi University ,New Delhi, India.
  5. Structural, dielectric and optical properties of manganese doped bismuth vanadate (Bi2V1-x MnxO5.5-x) films deposited by laser ablation.
    Neelam Kumari, K. B. R. Varma and S.B. Krupanidhi
    International Conference on Electroceramics (ICE- 2009),
    Delhi University, India.
  6. Influence of A-site Modification on the Dielectric, Ferroelectric and Relaxor Behavior of Lead-Free BaBi4Ti4O15 Ceramics.
    Sunil Kumar and K. B. R. Varma
    International conference on Materials for advanced technologies (ICMAT-2009), Suntec City, Singapore.
  7. Dielectric and magnetic characteristics of Sr2TiMnO6
    K.R.S. Preethi Meher and K. B. R. Varma,
    International conference on materials for advanced technologies organized (ICMAT-2009),
    Suntec City, Singapore.
  8. Ferroic properties of Bi4Ti3O12-5BiFeO3
    K.R.S. Preethi Meher and K. B. R. Varma
    Department of Atomic Energy- Solid State physics symposium (2008 )
  9. Structural and electrical characterization of Bi2VO5.5/Bi4Ti3O12 bilayer thin films deposited by pulsed laser ablation technique.
    Neelam Kumari, K. B. R. Varma and S.B. Krupanidhi
    15th National Seminar on Ferroelectrics & Dielectrics (2008),
    Thapar University, Patiala, India.
  10. Optical properties of Bi2VO5.5 thin films on platinized silicon measured by spectroscopic ellipsometry.
    Neelam Kumari, K. B. R. Varma and S.B. Krupanidhi
    The 10th IUMRS International Conference on Advanced Materials (2007),
    Bangalore, India.
  11. Structural, dielectric and ferroelectric properties of Bismuth vanadate thin films grown by pulsed laser Deposition on {(200) Pt/TiO2/SiO2/Si} substrates.
    Neelam Kumari, K. B. R. Varma and S.B. Krupanidhi
    National Seminar on Electroceramics (2007),
    GVM Girls College, Sonepat, India.
  12. Growth and characterization of excimer laser-ablated bismuth vanadate (Bi2VO5.5) thin films.
    Neelam Kumari, K. B. R. Varma and S.B. Krupanidhi
    DAE-BRNS 3rd National Symposium on Pulsed Laser Deposition of Thin Films and Nanostructured Materials, (2005),
    S. V. University, Tirupati, India.
  13. Growth and characterization of excimer laser-ablated bismuth vanadate (Bi2VO5.5) thin films
    Neelam Kumari, K. B. R. Varma and S.B. Krupanidhi
    DAE-BRNS 3rd National Symposium on Pulsed Laser Deposition of Thin Films and Nanostructured Materials, (2005),
    S. V. University, Tirupati, India.
  14. Chemical solution decomposition growth of Bismuth Vanadate thin films on p-type Si(100) and their C-V characteristics.
    Neelam Kumari, K. B. R. Varma and S.B. Krupanidhi.
    Conference on Functional Metamaterials at the Nanoscale (2005),
    Materials Research Center, Indian Institute of Science,
    Bangalore, India.

 

 
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