Evaluation of crystalline state properties of alkali hydrides and deuterides

University Department of Physics, T. M. Bhagalpur University, Bhagalpur-812 007, Bihar, India Manuscript received 22 Marc:h 2007, revised 5 June 2007, accepted 11 June 2007 The cohesive energy, atomlzotion energy, Grunelsen parameter, Anderson-Grunelsen parameter, Moelwyn-Hughcs parameter, force constant, compressibllity, absorption IR frequency and Debye temperature of alkali hydrides and deuterldes have been computed using the three standard short-range potential forms due to Born-Mayer, Hellmann and Varshlnl-Shukla. The calculated values have been compared with the experimental values available In the literature. They are fairly In agreement with the experimental values. It Is observed that the force constant, IR absorption frequency and Debye temperature of alkali hydrides and dcuterldes have almost similar results when computed for the three models. They show variation only In the third and fourth places after the decimal which may not be experimentally significant