Items where Author is "Varma, K. B. R."

Article

Barman, Nabadyuti ; Singh, Priyank ; Narayana, Chandrabhas ; Varma, K. B. R. (2017) Incipient ferroelectric to a possible ferroelectric transition in Te⁴⁺ doped calcium copper titanate (CaCu₃Ti₄O₁₂) ceramics at low temperature as evidenced by Raman and dielectric spectroscopy AIP Advances, 7 (3). pp. Article ID 035105-11 pages. ISSN 2158-3226

Narayanachari, K. V. L. V. ; Chandrasekar, Hareesh ; Banerjee, Amiya ; Varma, K. B. R. ; Ranjan, Rajeev ; Bhat, Navakanta ; Raghavan, Srinivasan (2016) Growth stress induced tunability of dielectric permittivity in thin films Journal of Applied Physics, 119 (1). 014106. ISSN 0021-8979

Satapathy, S. ; Pawar, Santosh ; Gupta, P. K. ; Varma, K. B. R. (2011) Effect of annealing on the phase transition in poly (vinylidene fluoride) films prepared using polar solvent Bulletin of Materials Science, 34 (4). pp. 727-733. ISSN 0250-4707

Satapathy, S. ; Verma, Prabha ; Gupta, P. K. ; Mukherjee, Chandrachur ; Sathe, V. G. ; Varma, K. B. R. (2011) Structural, dielectric and ferroelectric properties of multilayer lithium tantalate thin films prepared by sol-gel technique Thin Solid Films, 519 (6). pp. 1803-1808. ISSN 0040-6090

Kumari, Neelam ; Krupanidhi, S. B. ; Varma, K. B. R. (2010) Structural and electrical studies on Bi₂VO_5.5/Bi₄Ti₃O₁₂ multilayer thin films Journal of Materials Science: Materials in Electronics . ISSN 0957-4522

Kumari, Neelam ; Krupanidhi, S. B. ; Varma, K. B. R. (2010) Spectroscopic ellipsometry investigations of the optical properties of manganese doped bismuth vanadate thin films Materials Research Bulletin, 45 (4). pp. 464-473. ISSN 0025-5408

Singh, Satyendra ; Kumari, Neelam ; Varma, K. B. R. ; Krupanidhi, S. B. (2009) Synthesis, structural characterization and formation mechanism of ferroelectric bismuth vanadate nanotubes Journal of Nanoscience and Nanotechnology, 9 (11). pp. 6549-6553. ISSN 1533-4880

Majhi, Koushik ; Varma, K. B. R. ; Rao, K. J. (2009) Possible mechanism of charge transport and dielectric relaxation in SrO-Bi₂O₃-B₂O₃ glasses Journal of Applied Physics, 106 (8). pp. 084106_1-084106_8. ISSN 0021-8979

Kumari, Neelam ; Varma, K. B. R. ; Krupanidhi, S. B. (2008) Structural, optical and ac conduction properties of Bi₂V_1-xNb_xO_5.5 (0≤x≤0.4) thin films fabricated by pulsed laser deposition technique Materials Science and Engineering B, 153 (1-3). pp. 36-46. ISSN 0921-5107

Das, Kaushik ; Karthik, C. ; Varma, K. B. R. ; Ramamurty, U. (2008) Nano- and micro-indentation studies on lithium borate-barium bismuth niobate glasses Journal of Non-Crystalline Solids, 354 (32). pp. 3793-3798. ISSN 0022-3093

Satapathy, S. ; Soni, Puja ; Gupta, P. K. ; Dubey, V. K. ; Varma, K. B. R. (2008) Design and fabrication of dual mode pyroelectric sensor: high sensitive energymeter for Nd:YAG laser and detector for chopped He-Ne laser Sensors & Transducers Journal, 92 (5). pp. 61-68. ISSN 1726-5479

Kumari, N. ; Krupanidhi, S. B. ; Varma, K. B. R. (2008) Structural, ferroelectric and optical properties of Bi₂VO_5.5 thin films deposited on platinized silicon {(100) Pt/TiO₂/SiO₂/Si} substrates Applied Physics A: Materials Science & Processing, 91 (4). pp. 693-699. ISSN 0947-8396

Satapathy, S. ; Gupta, P. K. ; Srivastava, Himanshu ; Srivastava, A. K. ; Wadhawan, V. K. ; Varma, K. B. R. ; Sathe, V. G. (2007) Effect of capping ligands on the synthesis and on the physical properties of the nanoparticle of LiTaO₃ Journal of Crystal Growth, 307 (1). pp. 185-191. ISSN 0022-0248

Kumari, Neelam ; Krupanidhi, S. B. ; Varma, K. B. R. (2007) Dielectric, impedance and ferroelectric characteristics of c-oriented bismuth vanadate films grown by pulsed laser deposition Materials Science and Engineering B, 138 (1). pp. 22-30. ISSN 0921-5107

Karthik, C. ; Ravishankar, N. ; Maglione, Mario ; Vondermuhll, R. ; Etourneau, J. ; Varma, K. B. R. (2006) Relaxor behavior of K_0.5La_0.5Bi₂Ta₂O₉ ceramics Solid State Communications, 139 (6). pp. 268-272. ISSN 0038-1098

Kumari, Neelam ; Parui, Jayanta ; Varma, K. B. R. ; Krupanidhi, S. B. (2006) C-V studies on metal-ferroelectric bismuth vanadate (Bi₂VO_5.5)-semiconductor structure Solid State Communications, 137 (10). pp. 566-569. ISSN 0038-1098

Karthik, C. ; Ravishankar, N. ; Varma, K. B. R. (2005) Structural and dielectric properties of SrBi_2-xPb_xNb₂O_9−x/2(0 ≤ x ≤ 2) Ferroelectrics, 324 (1). pp. 113-119. ISSN 0015-0193

Thirumal, M. ; Senthil Murugan, G. ; Varma, K. B. R. ; Ganguli, A. K. (2000) Ba₃ZnTa_2−xNb_xO₉ and Ba₃MgTa_2−xNb_xO₉: synthesis, structural and dielectric studies Materials Research Bulletin, 35 (14-15). pp. 2423-2430. ISSN 0025-5408

Ramaswamy, Parvati ; Seetharamu, S. ; Varma, K. B. R. ; Rao, K. J. (1999) Evaluation of CaO-CeO₂-partially stabilized zirconia thermal barrier coatings Ceramics International, 25 (4). pp. 317-324. ISSN 0272-8842

Ramaswamy, P. ; Seetharamu, S. ; Varma, K. B. R. ; Rao, K. J. (1999) Thermal barrier coating application of zircon sand Journal of Thermal Spray Technology, 8 (3). pp. 447-453. ISSN 1059-9630

Ramaswamy, P. ; Seetharamu, S. ; Rao, K. J. ; Varma, K. B. R. (1998) Thermal shock characteristics of plasma sprayed mullite coatings Journal of Thermal Spray Technology, 7 (4). pp. 497-504. ISSN 1059-9630

Ramaswamy, Parvati ; Seetharamu, S. ; Varma, K. B. R. ; Rao, K. J. (1997) Al₂O₃ZrO₂ composite coatings for thermal-barrier applications Composites Science and Technology, 57 (1). pp. 81-89. ISSN 0266-3538

Ramaswamy, Parvati ; Seetharamu, S. ; Varma, K. B. R. ; Rao, K. J. (1996) A simple method for the preparation of plasma-sprayable powders based on ZrO₂ Journal of Materials Science, 31 (23). pp. 6325-6332. ISSN 0022-2461

Sharma, Vandana ; Varma, K. B. R. ; Shukla, A. K. (1995) Structural and dielectric properties of a novel Bi₂O₃-(1 -x)WO₃-xCuO solid solution Bulletin of Materials Science, 18 (5). pp. 631-636. ISSN 0250-4707

Ganguli, A. K. ; Jayadevan, K. P. ; Subbanna, G. N. ; Varma, K. B. R. (1995) Preparation and dielectric properties of zinc and cadmium doped barium tantalates, Ba₃Zn_1−xCd_xTa₂O₉ Solid State Communications, 94 (1). pp. 13-16. ISSN 0038-1098

Shankar, M. V. ; Varma, K. B. R. ; Sharma, G. V. R. ; Srikrishna, A. ; Prasad, B. R. ; Subramaniam, C. K. ; Narayanan, P. S. (1994) Microstructural and non-linear optical properties of hot-pressed ethoxy methoxy chalcone (EMC) Ferroelectrics, 156 (1). pp. 141-146. ISSN 0015-0193

Varma, K. B. R. ; Subbanna, G. N. ; Guru, T. N. ; Rao, C. N. R. (1990) Synthesis and characterization of layered bismuth vanadates Journal of Materials Research, 5 (11). pp. 2718-2722. ISSN 0884-2914

Varma, K. B. R. ; Subbanna, G. N. ; Ramakrishnan, T. V. ; Rao, C. N. R. (1989) Novel dielectric properties of glasses prepared by quenching melts of Bi—C—Sr—Cu—O cuprates Physica C: Superconductivity, 162-164 . pp. 891-892. ISSN 0921-4534

Varma, K. B. R. ; Raychaudhuri, A. K. (1989) Pyroelectric and dielectric properties of potassium hydrogen phthalate single crystals Journal of Physics D: Applied Physics, 22 (6). pp. 809-811. ISSN 0022-3727

Varma, K. B. R. ; Subbanna, G. N. ; Ramakrishnan, T. V. ; Rao, C. N. R. (1989) Dielectric properties of glasses prepared by quenching melts of superconducting Bi-Ca-Sr-Cu-O cuprates Applied Physics Letters, 55 (1). pp. 75-77. ISSN 0003-6951

Varma, K. B. R. ; Rao, K. J. ; Rao, C. N. R. (1989) Novel features of rapidly quenched melts of Bi₂(Ca,Sr)₃Cu₂O_8+δ Applied Physics Letters, 54 (1). pp. 69-71. ISSN 0003-6951

Rao, K. J. ; Varma, K. B. R. ; Raju, A. R. (1988) Light element ceramics Sadhana (Academy Proceedings in Engineering Sciences), 13 (1-2). pp. 73-95. ISSN 0256-2499

Ananthraj, S. ; Varma, K. B. R. ; Rao, K. J. (1988) Electrical properties of silver pyrophosphate glass Solid State Ionics, 27 (1-2). pp. 5-9. ISSN 0167-2738

Varma, K. B. R. ; Raju, A. R. ; Rao, K. J. (1988) Physico-chemical properties of pure and X-ray irradiated single crystals of KAP Crystal Research and Technology, 23 (2). pp. 185-193. ISSN 0232-1300

Varma, K. B. R. ; Rao, K. J. ; Rao, C. N. R. (1988) Dielectric anomaly in RF sputtered LiNbO₃ films Materials Research Bulletin, 21 . p. 1369. ISSN 0025-5408

Ananthraj, S. ; Varma, K. B. R. ; Rao, K. J. (1986) Thermal properties of silver pyrophosphate-anomalously high glass heat capacities Materials Research Bulletin, 21 (11). pp. 1369-1374. ISSN 0025-5408

Varma, K. B. R. ; Harshavardhan, K. S. ; Rao, K. J. ; Rao, C. N. R. (1985) Ferroelectric-like dielectric anomaly in RF-sputtered amorphous LiNbO₃ films Materials Research Bulletin, 20 (3). pp. 315-320. ISSN 0025-5408

Rao, K. J. ; Varma, K. B. R. (1985) Ferroelectric behaviour in non-crystalline and partially crystalline materials Proceedings of the III National Seminar on Ferroelectric and Dielectrics . p. 115.