Items where Author is "Vijayakumar, V."

Article

Patel, M. K. ; Avasthi, D. K. ; Kulriya, P. K. ; Kailas, S. ; Pivin, J. C. ; Tyagi, A. K. ; Vijayakumar, V. (2010) Swift heavy ion induced structural modifications in zircon and scheelite phases of ThGeO₄ Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 268 (1). pp. 42-48. ISSN 0168-583X

Patel, M. K. ; Vijayakumar, V. ; Kailas, S. ; Avasthi, D. K. ; Pivin, J. C. ; Tyagi, A. K. (2008) Structural modifications in pyrochlores caused by ions in the electronic stopping regime Journal of Nuclear Materials, 380 (1-3). pp. 93-98. ISSN 0022-3115

Speziale, S. ; Jeanloz, R. ; Clark, S. M. ; Meenakshi, S. ; Vijayakumar, V. ; Verma, A. K. ; Rao, R. S. ; Godwal, B. K. (2008) Axial ratio anomalies and electronic topological transitions in Cd_0.80Hg_0.20 at high pressures Journal of Physics and Chemistry of Solids, 69 (9). pp. 2325-2331. ISSN 0022-3697

Patel, M. K. ; Vijayakumar, V. ; Avasthi, D. K. ; Kailas, S. ; Pivin, J. C. ; Grover, V. ; Mandal, B. P. ; Tyagi, A. K. (2008) Effect of swift heavy ion irradiation in pyrochlores Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 266 (12-13). pp. 2898-2901. ISSN 0168-583X

Mittal, R. ; Garg, Alka B. ; Vijayakumar, V. ; Achary, S. N. ; Tyagi, A. K. ; Busetto, E. ; Lausi, A. ; Chaplot, S. L. ; Godwal, B. K. (2008) Investigation of the phase stability of LuVO₄ at high pressure using powder x-ray diffraction measurements and lattice dynamical calculations Journal of Physics: Condensed Matter, 20 (7). 075223_1-075223_7. ISSN 0953-8984

Garg, Alka B. ; Vijayakumar, V. ; Godwal, B. K. ; Choudhury, A. ; Hochheimer, Hans D. (2007) Reentrant high-conduction state in CuIr₂S₄ under pressure Solid State Communications, 142 (7). pp. 369-372. ISSN 0038-1098

Garg, Alka B. ; Vijayakumar, V. ; Verma, A. K. ; Rao, R. S. ; Godwal, B. K. (2007) Resistance anomaly and structural disorder in NiSi₂ under high pressure Journal of Physics and Chemistry of Solids, 68 (3). pp. 367-372. ISSN 0022-3697

Chandra, Amreesh ; Pandey, Dhananjai ; Tyagi, A. K. ; Mukherjee, G. D. ; Vijayakumar, V. (2007) Phase transition in disordered ferroelectric ceramic Pb_0.70Ca_0.30TiO₃ under pressure Applied Physics Letters, 90 (14). 142903_1-142903_3. ISSN 0003-6951

Garg, Alka B. ; Verma, Ashok K. ; Vijayakumar, V. ; Rao, R. S. ; Godwal, B. K. (2006) Electronic topological and structural transitions in AuGa₂ under pressure Journal of Physics: Condensed Matter, 18 (37). pp. 8523-8532. ISSN 0953-8984

Karandikar, A. S. ; Mukherjee, G. D. ; Vijayakumar, V. ; Godwal, B. K. ; Achary, S. N. ; Tyagi, A. K. (2006) Pressure evolution of resistance in framework structured materials α -ZrMo₂O₈ and α -HfMo₂O₈ Journal of Applied Physics, 100 (1). 013517_1-013517_7. ISSN 0021-8979

Garg, Alka B. ; Modak, P. ; Gaitonde, D. M. ; Rao, R. S. ; Vijayakumar, V. ; Godwal, B. K. (2005) On the possibility of a phonon mediated transport anomaly in MgB₂ under compression Solid State Communications, 135 (5). pp. 285-289. ISSN 0038-1098

Garg, Alka B. ; Verma, Ashok K. ; Vijayakumar, V. ; Rao, R. S. ; Godwal, B. K. (2005) High-pressure experimental and theoretical investigations on the fluorite structured compound AuAl₂ Physical Review B, 72 (2). 024112_1-024112_5. ISSN 0163-1829

Garg, Alka B. ; Vijayakumar, V. ; Godwal, B. K. ; Ohtani, T. ; Martin, B. R. ; Hochheimer, H. D. (2004) High pressure X-ray diffraction and electrical resistance study of the quasi-one-dimensional sulfide InV₆S₈ Solid State Communications, 132 (11). pp. 731-736. ISSN 0038-1098

Teredesai, Pallavi ; Muthu, D. V. S. ; Chandrabhas, N. ; Meenakshi, S. ; Vijayakumar, V. ; Modak, P. ; Rao, R. S. ; Godwal, B. K. ; Sikka, S. K. ; Sood, A. K. (2004) High pressure phase transition in metallic LaB₆: raman and X-ray diffraction studies Solid State Communications, 129 (12). pp. 791-796. ISSN 0038-1098

Garg, Alka B. ; Vijayakumar, V. ; Godwal, B. K. ; Dorhout, P. K. ; Hochheimer, H. D. (2004) High pressure electrical transport measurements of Cs₂MoS₄ and KTbP₂Se₆ and X-ray diffraction study of Cs₂MoS₄ Solid State Communications, 129 (8). pp. 511-514. ISSN 0038-1098

Garg, Alka B. ; Vijayakumar, V. ; Godwal, B. K. (2004) Electrical resistance measurements in a diamond anvil cell to 40 GPa on ytterbium Review of Scientific Instruments, 75 (7). pp. 2475-2478. ISSN 0034-6748

Garg, Alka B. ; Godwal, B. K. ; Meenakshi, S. ; Modak, P. ; Rao, R. S. ; Sikka, S. K. ; Vijayakumar, V. ; Lausi, A. ; Bussetto, E. (2002) Electronic topological transition in AuX₂ (X = In, Ga and Al) compounds at high pressures Journal of Physics: Condensed Matter, 14 (44). pp. 10605-10608. ISSN 0953-8984

Garg, Alka B. ; Vijayakumar, V. ; Modak, P. ; Gaitonde, D. M. ; Rao, R. S. ; Godwal, B. K. ; Sikka, S. K. (2002) High-pressure resistance and equation-of-state anomalies in Zn: a possible Lifshitz transition Journal of Physics: Condensed Matter, 14 (38). pp. 8795-8802. ISSN 0953-8984

Godwal, B. K. ; Meenakshi, S. ; Modak, P. ; Rao, R. S. ; Sikka, S. K. ; Vijayakumar, V. ; Bussetto, E. ; Lausi, A. (2002) Evidence of a Lifshitz transition in the high-pressure behavior of the intermetallic compound AuIn₂ Physical Review B, 65 (14). 14101_1-14101_4. ISSN 0163-1829

Meenakshi, S. ; Vijayakumar, V. ; Godwal, B. K. ; Sikka, S. K. (2001) Synchrotron-based x-ray-diffraction study of the intermediate-high-pressure phase in the alloy In_0.25Sn_0.75 Physical Review B, 64 (21). 212104_1-212104_4. ISSN 0163-1829

Sinha, Amar ; Garg, Alka B. ; Vijayakumar, V. ; Godwal, B. K. ; Sikka, S. K. (2001) A CCD based detector for quick detection of pressure induced phase transitions High Pressure Research, 21 (1). pp. 51-64. ISSN 0895-7959

Vijayakumar, V. ; Garg, Alka B. ; Godwal, B. K. ; Sikka, S. K. (2001) Pressure induced phase transitions and equation of state of adamantane Journal of Physics: Condensed Matter, 13 (9). pp. 1961-1972. ISSN 0953-8984

Vijayakumar, V. ; Garg, Alka B. ; Godwal, B. K. ; Sikka, S. K. (2000) High-pressure phase transitions in adamantane Chemical Physics Letters, 330 (3-4). pp. 275-280. ISSN 0009-2614

Rao, Rekha ; Sakuntala, T. ; Deb, S. K. ; Roy, A. P. ; Vijayakumar, V. ; Godwal, B. K. ; Sikka, S. K. (1999) High-pressure raman scattering studies on hexamethylenetetramine Chemical Physics Letters, 313 (5-6). pp. 749-754. ISSN 0009-2614

Godwal, B. K. ; Meenakshi, S. ; Vijayakumar, V. ; Rao, R. S. ; Ravindran, P. (1998) High pressure studies on YNi₂B₂C and LuNi₂B₂C: ADXRD, thermoelectric power, resistivity, and electronic structure Journal of Physics and Chemistry of Solids, 59 (10-12). pp. 2201-2204. ISSN 0022-3697

Meenakshi, S. ; Vijayakumar, V. ; Rao, R. S. ; Godwal, B. K. ; Sikka, S. K. ; Ravindran, P. ; Hossain, Z. ; Nagarajan, R. ; Gupta, L. C. ; Vijayaraghavan, R. (1998) High-pressure studies on YNi₂B₂C at room temperature Physical Review B, 58 (6). pp. 3377-3380. ISSN 0163-1829

Godwal, B. K. ; Meenakshi, S. ; Rao, R. S. ; Vijayakumar, V. (1998) c/a Anomalies, thermoelectric power and electronic topological transitions in Cd Journal of Physics and Chemistry of Solids, 59 (5). pp. 747-751. ISSN 0022-3697

Godwal, B. K. ; Jayaraman, A. ; Meenakshi, S. ; Rao, R. S. ; Sikka, S. K. ; Vijayakumar, V. (1998) Electronic topological and structural transition in AuIn₂ under pressure Physical Review B, 57 (2). pp. 773-776. ISSN 0163-1829

Meenakshi, S. ; Vijayakumar, V. ; Rao, R. S. ; Godwal, B. K. ; Sikka, S. K. ; Hossain, Z. ; Nagarajan, R. ; Gupta, L. C. ; Vijayaraghavan, R. (1996) High pressure study of borocarbide superconductor YNi₂B₂C at room temperature Physica B: Condensed Matter, 223-224 . pp. 93-95. ISSN 0921-4526

Ancharov, A. I. ; Tolochko, B. P. ; Chidambaram, R. ; Sikka, S. K. ; Momin, S. N. ; Vijayakumar, V. ; Kulipanov, G. N. (1995) An energy dispersive X-ray diffraction station at a VEPP-4 synchrotron beam line for structural studies at high pressure Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 359 (1-2). pp. 206-209. ISSN 0168-9002

Meenakshi, S. ; Godwal, B. K. ; Rao, R. S. ; Vijayakumar, V. (1994) Tetragonal distortion and structural stability of indium at high pressures Physical Review B, 50 (10). pp. 6569-6572. ISSN 0163-1829

Deb, S. K. ; Rekha, M. A. ; Roy, A. P. ; Vijayakumar, V. ; Meenakshi, S. ; Godwal, B. K. (1993) Raman-scattering study of high-pressure phase transition and amorphization of resorcinol Physical Review B, 47 (17). pp. 11491-11494. ISSN 0163-1829

Meenakshi, S. ; Vijayakumar, V. ; Godwal, B. K. ; Sikka, S. K. (1992) Distorted hcp structure of zinc under pressure Physical Review B, 46 (22). pp. 14359-14361. ISSN 0163-1829

Vijayakumar, V. ; Sikka H., S. K. (1991) A tetrahedrally close packed (tcp) structure for the high pressure phase of potassium Physics Letters A, 152 (7). pp. 353-355. ISSN 0375-9601

Vijayakumar, V. ; Godwal, B. K. ; Sikka, S. K. ; Chidambaram, R. (1988) On the nature of the dhcp to fcc transition under pressure in Pr and Pr-Th alloys Pramana - Journal of Physics, 31 (6). pp. 519-522. ISSN 0304-4289

Sikka, S. K. ; Vijayakumar, V. (1988) Theoretical isothermal equation of state of rhenium Physical Review B: Condensed Matter and Materials Physics, 38 (15). pp. 10926-10928. ISSN 1098-0121

Godwal, B. K. ; Vijayakumar, V. ; Sikka, S. K. ; Chidambaram, R. (1986) AlB₂ to Laves phase transition in ThAl₂ under pressure Physica B+C, 144 (1). pp. 44-47. ISSN 0378-4363

Sikka, S. K. ; Vijayakumar, V. (1986) On the structures of the 'distorted fcc' phase of rare earths and actinides. Some more possible structures Physica B+C, 144 (1). pp. 23-26. ISSN 0378-4363

Godwal, B. K. ; Vijayakumar, V. (1986) High pressure electrical resistance behaviour of Pr and Pr-Th alloys Phase Transitions, 8 (1). p. 71. ISSN 0141-1594

Vijayakumar, V. ; Sharma, S. M. ; Sikka, S. K. ; Chidambaram, R. (1986) Body-centred tetragonal to HCP phase transformation in Cd-Hg alloys under pressure Journal of Physics F: Metal Physics, 16 (7). pp. 831-836. ISSN 0305-4608

Vijayakumar, V. ; Sikka, S. K. ; Godwal, B. K. ; Chidambaram, R. (1986) Isostructural electronic anomaly in La and La-Th alloys Physica B+C, 139-140 . pp. 407-409. ISSN 0378-4363

Vijayakumar, V. ; Godwal, B. K. ; Sikka, S. K. (1985) Isostructural electronic anomaly in La and La-Th alloys at high pressures Physical Review B, 32 (6). pp. 4212-4213. ISSN 0163-1829

Surinder Sharma, M. ; Vijayakumar, V. ; Sikka, S. K. ; Chidambaram, R. (1985) High pressure phase transitions in organic solids. I: α → β transition in resorcinol Pramana - Journal of Physics, 25 (1). pp. 75-79. ISSN 0304-4289

Sikka, S. K. ; Godwal, B. K. ; Vijayakumar, V. (1985) Distorted fcc high pressure phase of rare earths in La_0.8Th_0.2 alloy at ambient conditions - thcp versus modulated hexagonal structure Physics Letters A, 108 (2). pp. 83-84. ISSN 0375-9601

Vohra, Y. K. ; Vijayakumar, V. ; Godwal, B. K. ; Sikka, S. K. (1984) Structure of the distorted fcc high-pressure phase of the trivalent rare-earth metals Physical Review B, 30 (10). pp. 6205-6207. ISSN 0163-1829

Vijayakumar, V. ; Godwal, B. K. ; Vohra, Y. K. ; Sikka, S. K. ; Chidambaram, R. (1984) On the high-pressure phase transition in beryllium metal Journal of Physics F: Metal Physics, 14 (5). L65-L68. ISSN 0305-4608

Vohra, Y. K. ; Vijayakumar, V. ; Godwal, B. K. ; Sikka, S. K. ; Chidambaram, R. (1984) Some high-pressure X-ray diffraction studies using beryllium gasketing on a diffractometer with rotating anode X-ray source Review of Scientific Instruments, 55 (10). p. 1593. ISSN 0034-6748

Vijayakumar, V. ; Vaidya, S. N. ; Sampathkumaran, E. V. ; Vijayaraghavan, R. (1983) High pressure thermopower and electrical resistance measurements in CeSn₃, CeAl₃, CeAl₂ and CeIn₃ Solid State Communications, 46 (7). pp. 549-551. ISSN 0038-1098

Vijayakumar, V. ; Vaidya, S. N. ; Sampathkumaran, E. V. ; Gupta, L. C. ; Vijayaraghavan, R. (1981) Effect of pressure on the electrical resistivity and the thermoelectric power of EuPd₂Si₂ Physics Letters A, 83 (9). pp. 469-470. ISSN 0375-9601

Vijayakumar, V. ; Vaidya, S. N. ; Sampathkumaran, E. V. ; Gupta, L. C. ; Vijayaraghavan, R. (1981) Thermoelectric behaviour of Sm₄Bi₃ and Yu₄Bi₃ at high pressures Journal of the Physical Society of Japan, 50 . pp. 19-20. ISSN 0031-9015

Vijayakumar, V. ; Vaidya, S. N. ; Sampathkumaran, E. V. ; Gupta, L. C. (1980) Effect of pressure on the electrical resistivity and Seebeck coefficient of some ternary rare-earth silicides High Temperatures - High Pressures, 12 . p. 649.

Rao, P. B. ; Vijayakumar, V. ; Krishnamoorthy, K. ; Murthy, B. V. K. ; Reddi, C. R. (1980) Effects of the ionosphere on satellite to ground communications at the equator Proceedings of the Symposium, Bangalore, India, May 29 - June 9 . pp. 217-220.