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Gyanchandani, Jyoti ; Sikka, S. K. (2012) Structural properties of rutherfordium: an ab-initio study Physics Letters A, 376 (4). pp. 620-625. ISSN 0375-9601

Gyanchandani, Jyoti ; Sikka, S. K. (2011) Physical properties of the 6d-series elements from density functional theory: close similarity to lighter transition metals Physical Review B: Condensed Matter and Materials Physics, 83 (17). 172101_1-172101_4. ISSN 1098-0121

Pandey, K. K. ; Garg, Nandini ; Shanavas, K. V. ; Sharma, Surinder M. ; Sikka, S. K. (2011) Pressure induced crystallization in amorphous silicon Journal of Applied Physics, 109 (11). 113511_1-113511_7. ISSN 0021-8979

Mukherjee, D. ; Sahoo, B. D. ; Joshi, K. D. ; Gupta, Satish C. ; Sikka, S. K. (2011) Thermo-physical properties of LiH at high pressures by ab initio calculations Journal of Applied Physics, 109 (10). pp. 103515-103519. ISSN 0021-8979

Poswal, H. K. ; Sharma, Surinder M. ; Sikka, S. K. (2010) Investigation of structure and hydrogen bonding of superhydrous phase B (HT) under pressure using first-principles density functional calculations High Pressure Research, 30 (1). pp. 198-206. ISSN 0895-7959

Poswal, H. K. ; Sharma, Surinder M. ; Sikka, S. K. (2009) High pressure investigations on hydrous Magnesium Silicate-Phase A using first principles calculations, H---H repulsion and O-H bond compression Arxiv - eprints .

Jyoti, G. ; Tewari, R. ; Joshi, K. D. ; Srivastava, Dinesh ; Dey, G. K. ; Gupta, S. C. ; Sikka, S. K. ; Banerjee, S. (2008) Alpha to omega transition in shock compressed zirconium: crystallographic aspects Defect and Diffusion Forum, 279 . pp. 133-138. ISSN 1012-0386

Sikka, S. K. ; Sharma, Surinder M. (2008) The hydrogen bond under pressure Phase Transitions, 81 (10). pp. 907-934. ISSN 0141-1594

Sikka, S. K. (2007) On some hydrogen bond correlations at high pressures International Journal of High Pressure Research, 27 (3). pp. 313-319. ISSN 0895-7959

Ranjan, Rajeev ; Singh, R. K. ; Sikka, S. K. ; Kakodkar, Anil (2006) Phenomenology of baneberry nuclear event revisited with 3-D finite element transient simulation Nuclear Technology, 153 (3). pp. 341-359. ISSN 0029-5450

Garg, Nandini ; Sharma, Surinder M. ; Sikka, S. K. (2005) Investigations of pressure induced structural phase transformations in pentaerythritol Solid State Communications, 136 (1). pp. 56-61. ISSN 0038-1098

Poswal, H. K. ; Garg, Nandini ; Sharma, Surinder M. ; Busetto, E. ; Sikka, S. K. ; Gundiah, Gautam ; Deepak, F. L. ; Rao, C. N. R. (2005) Pressure-induced structural phase transformations in silicon nanowires Journal of Nanoscience and Nanotechnology, 5 (5). pp. 729-732. ISSN 1533-4880

Ranjan, Rajeev ; Singh, R. K. ; Sikka, S. K. ; Kakodkar, Anil (2005) Cratering and spall simulation of Pokhran-1 event with three-dimensional transient finite element analysis Current Science, 88 (7). pp. 1133-1141. ISSN 0011-3891

Sikka, S. K. (2005) A high pressure distorted α-uranium (Pnma) structure in plutonium Solid State Communications, 133 (3). pp. 169-172. ISSN 0038-1098

Dey, G. K. ; Tewari, R. ; Banerjee, S. ; Jyoti, G. ; Gupta, S. C. ; Joshi, K. D. ; Sikka, S. K. (2004) Formation of a shock deformation induced ω phase in Zr 20 Nb alloy Acta Materialia, 52 (18). pp. 5243-5254. ISSN 1359-6454

Garg, Nandini ; Karmakar, S. ; Surinder, S. M. ; Sharma, M. ; Busseto, E. ; Sikka, S. K. (2004) High-pressure X-ray diffraction studies on β-Ni(OH)₂ Physica B: Condensed Matter, 349 (1-4). pp. 245-250. ISSN 0921-4526

Sikka, S. K. (2004) Negative thermal expansion and its relation to high pressures Journal of Physics: Condensed Matter, 16 (14). S1033-S1039. ISSN 0953-8984

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

Murli, Chitra ; Sharma, Surinder M. ; Karmakar, S. ; Sikka, S. K. (2003) α-Glycine under high pressures: a Raman scattering study Physica B: Condensed Matter, 339 (1). pp. 23-30. ISSN 0921-4526

Chidambaram, R. ; Sikka, S. K. (2003) Neutron crystallography - then and now Current Science, 85 (7). pp. 871-877. ISSN 0011-3891

Godwal, B. K. ; Rao, R. S. ; Verma, A. K. ; Shukla, M. ; Pant, H. C. ; Sikka, S. K. (2003) Equation of state of condensed matter in laser-induced high-pressure regime Laser and Particle Beams, 21 (4). pp. 523-528. ISSN 0263-0346

Karmakar, Sukanta ; Sharma, Surinder M. ; Teredesai, P. V. ; Muthu, D. V. S. ; Govindaraj, A. ; Sikka, S. K. ; Sood, A. K. (2003) Structural changes in single-walled carbon nanotubes under non-hydrostatic pressures: X-ray and Raman studies New Journal of Physics, 5 (1). p. 143. ISSN 1367-2630

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

Joshi, K. D. ; Jyoti, G. ; Gupta, Satish C. ; Sikka, S. K. (2002) Some aspects of pressure-induced ω → β transformation in group IVB elements Journal of Physics: Condensed Matter, 14 (44). pp. 10921-10925. ISSN 0953-8984

Sikka, S. K. ; Falguni, Roy ; Basu, T. K. (2002) Body-wave magnitude bias between Pokhran and eastern Kazakh nuclear test sites Current Science, 83 (8). pp. 992-997. ISSN 0011-3891

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

Modak, P. ; Rao, R. S. ; Godwal, B. K. ; Sikka, S. K. (2002) Electronic structure of MgB₂ Pramana - Journal of Physics, 58 (5-6). pp. 881-884. ISSN 0304-4289

Sikka, S. K. ; Sharma, Surinder M. (2002) Current high pressure powder X-ray crystallography Proceedings of the Indian National Science Academy - Part A: Physical Sciences, 68 (3). pp. 293-313. ISSN 0370-0046

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

Joshi, K. D. ; Jyoti, G. ; Gupta, Satish C. ; Sikka, S. K. (2002) Stability of γ and δ phases in Ti at high pressures Physical Review B: Condensed Matter and Materials Physics, 65 (5). 052106_1-052106_4. ISSN 1098-0121

Dey, G. K. ; Tewari, R. ; Banerjee, S. ; Jyoti, G. ; Gupta, S. C. ; Joshi, K. D. ; Sikka, S. K. (2002) A new high-pressure phase transition in a zirconium-niobium alloy Philosophical Magazine Letters, 82 (6). pp. 333-340. ISSN 0950-0839

Murli, Chitra ; Sharma, Surinder M. ; Kulshreshtha, S. K. ; Sikka, S. K. (2001) High-pressure behavior of β-Ni (OH)₂- a Raman scattering study Physica B: Condensed Matter, 307 (1-4). pp. 111-116. ISSN 0921-4526

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

Sharma, Surinder M. ; Karmakar, S. ; Sikka, S. K. ; Teredesai, Pallavi V. ; Sood, A. K. ; Govindaraj, A. ; Rao, C. N. R. (2001) Pressure-induced phase transformation and structural resilience of single-wall carbon nanotube bundles Physical Review B: Condensed Matter and Materials Physics, 63 (20). 205417_1-205417_5. ISSN 1098-0121

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

Teredesai, P. V. ; Sood, A. K. ; Sharma, S. M. ; Karmakar, S. ; Sikka, S. K. ; Govindaraj, A. ; Rao, C. N. R. (2001) Pressure effects on single wall carbon nanotube bundles Physica Status Solidi B, 223 (2). pp. 479-487. ISSN 0370-1972

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

Palanivel, B. ; Rao, R. S. ; Godwal, B. K. ; Sikka, S. K. (2000) On the relative stability of orthorhombic and hcp phases of beryllium at high pressures Journal of Physics: Condensed Matter, 12 (41). pp. 8831-8836. ISSN 0953-8984

Sharma, Surinder M. ; Garg, Nandini ; Sikka, S. K. (2000) High-pressure X-ray-diffraction study of α-AlPO₄ Physical Review B: Condensed Matter and Materials Physics, 62 (13). pp. 8824-8827. ISSN 1098-0121

Sharma, Surinder M. ; Garg, Nandini ; Sikka, S. K. (2000) High pressure phase transformations in α-AlPO₄: an X-ray diffraction investigation Journal of Physics: Condensed Matter, 12 (30). pp. 6683-6692. ISSN 0953-8984

Ancharov, A. I. ; Evdokov, O. V. ; Tolochko, B. P. ; Sukhorukov, A. V. ; Baru, S. E. ; Savinov, G. A. ; Kosov, A. V. ; Sheromov, M. A. ; Sikka, S. K. ; Momin, S. N. (2000) The white SR spectrum experimental station Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 448 (1-2). pp. 126-128. ISSN 0168-9002

Rao, Rekha ; Sakuntala, T. ; Deb, S. K. ; Roy, A. P. ; Vijaykumar, V. ; Godwal, B. K. ; Sikka, S. K. (2000) High pressure Raman scattering studies on adamantane Journal of Chemical Physics, 112 (15). pp. 6739-6744. ISSN 0021-9606

Chaplot, S. L. ; Sikka, S. K. (2000) Molecular-dynamics simulation of shock-stress-induced amorphization of α-quartz Physical Review B: Condensed Matter and Materials Physics, 61 (17). pp. 11205-11208. ISSN 1098-0121

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

Rao, R. S. ; Modak, P. ; Godwal, B. K. ; Sikka, S. K. (1999) Stability of the pressure-induced orthorhombic phase of iron Physical Review B, 59 (21). pp. 13498-13500. ISSN 0163-1829

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

Murli, Chitra ; Sugandhi, V. ; Garg, Nandini ; Sharma, Surinder M. ; Sikka, S. K. (1998) Spectroscopic study of β-Ni(OH)₂ under pressure Pramana - Journal of Physics, 50 (3). pp. 213-220. ISSN 0304-4289

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

Joshi, K. D. ; Suresh, N. ; Jyoti, G. ; Kulshreshtha, S. K. ; Gupta, S. C. ; Sikka, S. K. (1998) Shock wave induced phase transition in α-FePO₄ Shock Waves, 8 (3). pp. 173-176. ISSN 0938-1287

Godwal, B. K. ; Sikka, S. K. ; Kaushik, T. C. (1997) Equation of state in laser shock simulations Laser and Particle Beams, 15 (3). pp. 353-365. ISSN 0263-0346

Murli, Chitra ; Sharma, Surinder M. ; Kulshreshtha, S. K. ; Sikka, S. K. (1997) High pressure study of phase transitions in α-FePO₄ Pramana - Journal of Physics, 49 (3). pp. 285-291. ISSN 0304-4289

Jyoti, G. ; Joshi, K. D. ; Gupta, Satish C. ; Sikka, S. K. ; Dey, G. K. ; Banerjee, S. (1997) α→ω transition in shock compressed zirconium: a study on crystallographic aspects Bulletin of Materials Science, 20 (5). pp. 623-635. ISSN 0250-4707

Sikka, S. K. (1997) Pressure variation of the O-H bond length in O-H---O hydrogen bonds Current Science, 73 (2). pp. 195-197. ISSN 0011-3891

Jyoti, G. ; Joshi, K. D. ; Gupta, Satish C. ; Sikka, S. K. (1997) Alpha omicro Crystallography of the transition in shock-loaded zirconium Philosophical Magazine Letters, 75 (5). pp. 291-300. ISSN 0950-0839

Sikka, S. K. ; Surinder Sharma, M. ; Chidambaram, R. (1996) Structure determination at high pressures from molecular dynamics simulation XVII Congress of the International Union of Crystallography (IUCr), Seattle, USA . S0107.

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

Sharma, S. M. ; Sikka, S. K. (1996) Pressure induced amorphization of materials Progress in Materials Science, 40 (1). pp. 1-77. ISSN 0079-6425

Gupta, Satish C. ; Sikka, S. K. (1996) Some investigations on shock wave induced phase transitions Shock Waves, 6 (6). pp. 345-359. ISSN 0938-1287

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

Joshi, K. D. ; Jyoti, G. ; Satish, Gupta C. ; Sikka, S. K. ; Chidambaram, R. ; Kamat, A. S. ; Venugopal, V. ; Paul, Thomas ; Kesavan, P. C. (1995) Effect of dynamic high pressure on fish bacteria: a case study High Pressure Science & Technology : Proceedings of the Joint XV AIRAPT & XXXIII EHPRG International Conference Warsaw, Poland . pp. 882-884.

Sikka, S. K. (1994) Condensed matter physics under pressure Current Science, 67 (11). pp. 874-875. ISSN 0011-3891

Suresh, N. ; Jyoti, G. ; Gupta, Satish C. ; Sikka, S. K. ; Sangeeta, ; Sabharwal, S. C. (1994) Shock-induced amorphization of q-GeO₂ Journal of Applied Physics, 76 (3). pp. 1530-1534. ISSN 0021-8979

Somayazulu, M. S. ; Sharma, Surinder M. ; Sikka, S. K. (1994) Structure of a new high pressure phase in α-quartz determined by molecular dynamics studies Physical Review Letters, 73 (1). pp. 98-101. ISSN 0031-9007

Somayazulu, M. S. ; Garg, Nandini ; Sharma, Surinder M. ; Sikka, S. K. (1994) Search for a precursor crystal-to-crystal phase transition to amorphization in α-GeO₂ and α-AlPO₄ under pressure Pramana - Journal of Physics, 43 (1). pp. 1-9. ISSN 0304-4289

Rao, R. S. ; Godwal, B. K. ; Sikka, S. K. ; Chidambaram, R. (1994) Occupancy of central sites in the Zn₄₉Mg₃₂ quasicrystal from total-energy computations on its crystal approximant Physical Review B: Condensed Matter and Materials Physics, 50 (21). pp. 15632-15635. ISSN 1098-0121

Gupta, Satish C. ; Daswani, Jyoti M. ; Sikka, S. K. ; Chidambaram, R. (1993) Predicting the high pressure phase transformations using density functional approach Current Science, 65 (5). pp. 399-406. ISSN 0011-3891

Somayazulu, M. S. ; Sharma, S. M. ; Garg, N. ; Chaplot, S. L. ; Sikka, S. K. (1993) The behaviour of alpha -quartz and pressure-induced SiO₂ glass under pressure: a molecular dynamical study Journal of Physics: Condensed Matter, 5 (35). pp. 6345-6356. ISSN 0953-8984

Somayazulu, M. S. ; Sharma, Surinder M. ; Sikka, S. K. ; Garg, Nandini ; Chaplot, S. L. (1993) Molecular dynamical calculations of α- quartz implications for shock results American Institute of Physics Conference Proceedings, 309 . pp. 815-818. ISSN 0094-243X

Chaplot, S. L. ; Sikka, S. K. (1993) Molecular-dynamics simulation of pressure-induced crystalline-to-amorphous transition in some corner-linked polyhedral compounds Physical Review B: Condensed Matter and Materials Physics, B47 (10). pp. 5710-5714. ISSN 1098-0121

Somayazulu, M. S. ; Ramachandran, Hema S. ; Sharma, Surinder M. ; Sikka, S. K. (1993) Phase transition in potassium titanyl phosphate (KTP) under high pressure American Institute of Physics Conference Proceedings, 309 . pp. 343-345. ISSN 0094-243X

Sikka, S. K. ; Sharma, Surinder M. ; Chidambaram, R. (1993) Steric constraints: a powerful criterion to predict the onset of phase transitions in molecular solids under pressure American Institute of Physics Conference Proceedings, 309 . pp. 213-216. ISSN 0094-243X

Sikka, S. K. ; Surinder Sharma, M. ; Chidambaram, R. (1993) Total-energy calculations for crystalline approximants of quasicrystalline structures: occupation of the centers of the icosahedral units Physical Review B: Condensed Matter and Materials Physics, 47 (5). pp. 2878-2881. ISSN 1098-0121

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

Sikka, S. K. ; Sharma, Surinder M. (1992) Close packing and pressure-induced amorphization Current Science, 63 (6). pp. 317-320. ISSN 0011-3891

Rao, R. S. ; Godwal, B. K. ; Sikka, S. K. (1992) Thorium: a 5f-band metal at ultrahigh pressures Physical Review B, 46 (9). pp. 5780-5782. ISSN 0163-1829

Sankaran, H. ; Sharma, S. M. ; Sikka, S. K. (1992) The low-temperature phase of sodium: an intermediate orthorhombic distortion? Journal of Physics: Condensed Matter, 4 (4). L61- L66. ISSN 0953-8984

Sikka, S. K. ; Sharma, Surinder M. (1992) Amorphization under shock loading High Pressure Research, 10 (5-6). pp. 675-680. ISSN 0895-7959

Sikka, S. K. (1992) Behaviour of materials under shock loading conditions Bulletin of Materials Science, 15 (1). pp. 35-46. ISSN 0250-4707

Sikka, S. K. ; Godwal, B. K. ; Rao, R. S. (1992) On the occurrence of b.c.c.-h.c.p. structural phase transition in Mo under pressure High Pressure Research, 10 (5-6). pp. 707-709. ISSN 0895-7959

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

Sankaran, Hema ; Sikka, S. K. ; Sequeira, A. ; Fursenko, B. (1991) Visual observation of phase transitions in LiKSO₄ under pressure Bulletin of Materials Science, 14 (5). pp. 1213-1218. ISSN 0250-4707

Sankaran, Hema ; Sharma, Surinder M. ; Sikka, S. K. ; Chidambaram, R. (1990) Pressure induced amorphization of AIPO₄ Pramana - Journal of Physics, 35 (2). pp. 177-180. ISSN 0304-4289

Gyanchandani, J. S. ; Gupta, S. C. ; Sikka, S. K. ; Chidambaram, R. (1990) Structural stability of Hafnium under pressure Journal of Physics: Condensed Matter, 2 (30). pp. 6457-6460. ISSN 0953-8984

Gyanchandani, J. S. ; Gupta, S. C. ; Sikka, S. K. ; Chidambaram, R. (1990) The equation of state and structural stability of titanium obtained using the linear muffin-tin orbital band-structure method Journal of Physics: Condensed Matter, 2 (2). pp. 301-306. ISSN 0953-8984

Jyoti Gyanchandani, S. ; Satish Gupta, C. ; Sikka, S. K. ; Chidambaram, R. (1990) HIGH pressure structural investigations of zirconium using LMTO method High Pressure Research: An International Journal, 4 (1-6). pp. 472-474. ISSN 0895-7959

Sikka, S. K. (1990) On localization of f-electrons in high temperature phases of early actinides International Journal of High Pressure Research, 2 (5-6). pp. 289-294. ISSN 0895-7959

Vijaykumar, V. ; Sikka, S. K. (1990) Structural investigation of the high pressure phases Si(vi), Ge(iv) and Sn_.8 In_.2 (II) nternational Journal of High Pressure Research, 4 (1-6). pp. 306-308. ISSN 0895-7959

Sankaran, Hema ; Sikka, S. K. ; Chidambaram, R. (1990) A search for pressure induced amorphisation in quartz-like structures High Pressure Research: An International Journal, 4 (1-6). pp. 393-395. ISSN 0895-7959

Sikka, S. K. ; Sankaran, H. ; Sharma, S. M. (1989) Energy dispersive X-Ray diffraction for materials research at high pressures Indian Journal of Pure & Applied Physics, 27 (7-8). pp. 472-478. ISSN 0019-5596

Sikka, S. K. (1989) Empirical equation of state theories at ultra-high pressures Physics Letters A, 135 (2). pp. 129-131. 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

Sankaran, Hema ; Sharma, Surinder M. ; Sikka, S. K. (1988) An orthorhombic structure for the high temperature lock-in phase of LiKSO₄ Solid State Communications, 66 (1). pp. 7-9. ISSN 0038-1098

Sankaran, Hema ; Sikka, S. K. ; Surinder Sharma, M. ; Chidambaram, R. (1988) Pressure-induced noncrystalline phase of LiKSO₄ Physical Review B: Condensed Matter and Materials Physics, 38 (1). pp. 170-173. ISSN 1098-0121

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

Sikka, S. K. (1988) s-d transition and the universal equation of state Physical Review B: Condensed Matter and Materials Physics, 38 (12). pp. 8463-8464. ISSN 1098-0121

Sikka, S. K. ; Godwal, B. K. (1987) Simple method to estimate pressure of narrow full core levels Physical Review B, 35 (3). pp. 1446-1447. ISSN 0163-1829

Surinder Sharma, M. ; Sankaran, Hema ; Sikka, S. K. ; Chidambaram, R. (1987) Two-strain mechanism of pressure-induced body-centered-tetragonal to hexagonal-close-packed transition in Hg and Hg_xCd_1-x alloys Physical Review B: Condensed Matter and Materials Physics, 36 (14). pp. 7730-7732. ISSN 1098-0121

Sankaran, Hema ; Surinder Sharma, M. ; Sikka, S. K. ; Chidambaram, R. (1986) High pressure phase transitions in organic solids II: X-ray diffraction study of p-dichlorobenzene at high pressures Pramana - Journal of Physics, 27 (6). pp. 835-839. ISSN 0304-4289

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. ; Sikka, S. K. ; Chidambaram, R. (1986) s→d electron transfer and equation of state of Ti, Zr and Hf by linear muffin tin orbital method Phase Transitions, 8 (1). p. 70. ISSN 0141-1594

Godwal, B. K. ; Vijaykumar, V. ; Sikka, S. K. ; Chidambaram, R. (1986) Pressure-induced AlB₂ to MgCu₂-type structural transition in ThAl₂ Journal of Physics F: Metal Physics, 16 (10). pp. 1415-1418. ISSN 0305-4608

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

Sankaran, Hema ; Sharma, Surinder M. ; Sikka, S. K. (1986) Observation of the volume discontinuity in the insulator-to-metal transition in CsI in X-ray diffraction experiments Physical Review B: Condensed Matter and Materials Physics, 33 (5). pp. 3543-3544. ISSN 1098-0121

Satish Gupta, C. ; Sikka, S. K. ; Chidambaram, R. (1985) On orientation relations between α and ω phases in Zr by texture studies using neutron diffraction method Scripta Metallurgica, 19 (10). pp. 1167-1169. ISSN 0036-9748

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

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

Chidambaram, R. ; Sikka, S. K. ; Gupta, Satish C. (1985) Phenomenology of the Pokaranpne experiment Pramana - Journal of Physics, 24 (1-2). pp. 245-258. ISSN 0304-4289

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

Olijnyk, H. ; Sikka, S. K. ; Holzapfel, W. B. (1984) Structural phase transitions in Si and Ge under pressures up to 50 GPa Physics Letters A, 103 (3). pp. 137-140. ISSN 0375-9601

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

Sharma, S. M. ; Sikka, S. K. (1984) Many-body enhancement of positron annihilation in metals: the choice of electron density parameter r_s Journal of Physics F: Metal Physics, 14 (4). pp. 873-877. 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

Godwal, B. K. ; Sikka, S. K. ; Chidambaram, R. (1983) Equation of state theories of condensed matter up to about 10 TPa Physics Reports, 102 (3). pp. 121-197. ISSN 0370-1573

Sikka, S. K. (1983) The phase problem in neutron diffraction Proceedings of the Indian Academy of Sciences - Chemical Sciences, 92 (4-5). pp. 403-414. ISSN 0253-4134

Vohra, Y. K. ; Sikka, S. K. ; Holzapfel, W. B. (1983) On the initial softness in the equation of state of the d band metals Journal of Physics F - Metal Physics, 13 (6). L107-L110. ISSN 0305-4608

Godwal, B. K. ; Sikka, S. K. (1982) Shock hugoniot equation of state of thorium Journal of Physics F: Metal Physics, 12 (4). pp. 655-660. ISSN 0305-4608

Sikka, S. K. ; Vohra, Y. K. ; Chidambaram, R. (1982) β-ω Transformation under pressure ans stacking soliton model for diffuse omega phase in Ti-V alloys Solid State Communications, 42 (3). pp. 205-207. ISSN 0038-1098

Sikka, S. K. ; Vohra, Y. K. ; Chidambaram, R. (1982) Omega phase in materials Progress in Materials Science, 27 (3-4). pp. 245-310. ISSN 0079-6425

Sharma, Surinder M. ; Sikka, S. K. (1982) Statistical analysis of positron annihilation and Compton profile experiments using normal probability plots Philosophical Magazine B, 45 (3). pp. 317-322. ISSN 1364-2812

Vohra, Y. K. ; Sikka, S. K. ; Chidambaram, R. (1981) Structural aspects of alpha-omega transformation in group IV transition metals and alloys Bulletin of Materials Science, 3 (2). pp. 109-117. ISSN 0250-4707

Sikka, S. K. ; Godwal, B. K. (1981) The limiting compression in single shocks for sp metals Solid State Communications, 38 (10). pp. 949-951. ISSN 0038-1098

Vohra, Y. K. ; Menon, E. S. K. ; Sikka, S. K. ; Krishnan, R. (1981) High pressure studies on a prototype omega forming alloy system Acta Metallurgica, 29 (2). pp. 457-470. ISSN 0001-6160

Godwal, B. K. ; Sikka, S. K. ; Chidambaram, R. (1981) Model for the equation of state of condensed matter in the "intermediate" pressure (about 0.5-10 TPa) region Physical Review Letters, 47 (16). pp. 1144-1147. ISSN 0031-9007

Vohra, Y. K. ; Sikka, S. K. ; Menon, E. S. K. ; Krishnan, R. (1980) Direct evidence of intermediate state during alpha-omega transformation in Ti---V alloy Acta Metallurgica, 28 (6). pp. 683-685. ISSN 0001-6160

Satish Gupta, C. ; Sikka, S. K. ; Chidambaram, R. (1979) Effect of porosity on the cratering efficiency of underground peaceful nuclear explosions in a shale medium Proceedings of the Indian Academy of Sciences, Section A, 88 (2). pp. 77-85. ISSN 0370-0089

Godwal, B. K. ; Sikka, S. K. ; Chidambaram, R. (1979) Electronic Grüneisen parameter in the shock Hugoniot equation of state of aluminum Physical Review B: Condensed Matter and Materials Physics, 20 (6). pp. 2362-2365. ISSN 1098-0121

Vohra, Y. K. ; Sikka, S. K. ; Chidambaram, R. (1979) Electronic structure of omega phase of titanium and zirconium Journal of Physics F: Metal Physics, 9 (9). pp. 1771-1782. ISSN 0305-4608

Ranga Rao, M. P. ; Sikka, S. K. (1978) Cavity radius estimation for contained peaceful nuclear explosions-an analytic approach Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 87 (3). pp. 13-21. ISSN 0253-4126

Godwal, B. K. ; Sikka, S. K. (1978) Opacities of high temperature high Z plasmas Pramana - Journal of Physics, 11 (1). pp. 47-53. ISSN 0304-4289

Wadhawan, V. K. ; Sikka, S. K. ; Chidambaram, R. (1977) The crystal structure of onitin, a phenolic illudoid sesquiterpene from the fern Onychium auratum Acta Crystallographica - Section B: Structural Crystallography & Crystal Chemistry, 33 (2). pp. 428-433. ISSN 0567-7408

Vohra, Y. K. ; Sikka, S. K. ; Vaidya, S. N. ; Chidambaram, R. (1977) Impurity effects and reaction kinetics of the pressure-induced α→ω transformation in Ti Journal of Physics and Chemistry of Solids, 38 (11). pp. 1293-1296. ISSN 0022-3697

Godwal, B. K. ; Sikka, S. K. (1977) Saha's ionization equation for high Z elements Pramana - Journal of Physics, 8 (3). pp. 217-222. ISSN 0304-4289

Ramanadham, M. ; Sikka, S. K. ; Chidambaram, R. (1973) Refinement of hydrogen-atom positions in L-cysteic acid. H₂O from neutron diffraction data Acta Crystallographica - Section B: Structural Crystallography & Crystal Chemistry,, 29 (5). pp. 1167-1170. ISSN 0567-7408

Wadhawan, V. K. ; Sikka, S. K. ; Mulchandani, N. B. (1973) Minor alkaloids of tylophora asthmatica x-ray analysis of tylophorinidine Tetrahedron Letters, 14 (51). pp. 5091-5094. ISSN 0040-4039

Ramanadham, M. ; Sikka, S. K. ; Chidambaram, R. (1973) Structure determination of Ls-threonine by neutron diffraction Pramana - Journal of Physics, 1 (6). pp. 247-259. ISSN 0304-4289

Ramanadham, M. ; Sikka, S. K. ; Chidambaram, R. (1972) Structure of L-asparagine monohydrate by neutron diffraction Acta Crystallographica - Section B: Structural Crystallography & Crystal Chemistry, 28 (10). pp. 3000-3005. ISSN 0567-7408

Sikka, S. K. (1970) Application of the symbolic addition procedure in neutron diffraction for non-centrosymmetric crystals Acta Crystallographica Section A, 26 . pp. 662-666. ISSN 0108-7673

MacDonald, A. C. ; Sikka, S. K. (1969) The determination of the crystal structure of cadmium nitrate tetradeuterate by means of neutron anomalous dispersion measurements Acta Crystallographica - Section B: Structural Crystallography & Crystal Chemistry, 25 . pp. 1804-1811. ISSN 0567-7408

Sikka, S. K. (1969) The use of neutron resonance scattering in the structure determination of Sm(BrO₃)₃·9H₂O Acta Crystallographica Section A, 25 . pp. 621-626. ISSN 0108-7673

Sikka, S. K. (1969) On the application of the symbolic addition procedure in neutron diffraction structure determination Acta Crystallographica Section A, 25 . pp. 539-543. ISSN 0108-7673

Sikka, S. K. (1969) Location of the anomalous scatterer in neutron anomalous scattering studies Acta Crystallographica Section A, 25 . pp. 396-397. ISSN 0108-7673

Chidambaram, R. ; Sikka, S. K. (1968) Bent O-H - O hydrogen bonds in crystals Chemical Physics Letters, 2 (3). pp. 162-165. ISSN 0009-2614

Chidambaram, R. ; Sequeira, A. S. ; Sikka, S. K. (1964) Fast recording of neutron diffraction intensity data Nuclear Instruments and Methods, 26 . pp. 340-342. ISSN 0029-554X

Chidambaram, R. ; Sequeira, A. ; Sikka, S. K. (1964) Neutron-diffraction study of the structure of potassium oxalate monohydrate: lone-pair coordination of the hydrogen-bonded water molecule in crystals Journal of Chemical Physics, 41 (11). No pp. given. ISSN 0021-9606