Analysis of high pressure equations of state for sodium halides

S. Meenakshi, B. S. Sharma

Research output: Contribution to journalArticlepeer-review


An analysis of high pressure equations of state has been performed to determine the pressure-volume relationships for NaF, NaCl, NaBr and Nal crystals under pressures up to their phase transition pressures. The results have been obtained using five different phenomenological forms of isothermal equation of state. It has been found that the results obtained from the usual Tait equation, the Brennan-Stacey equation, the Vinet universal equation and the Shanker equation are in good agreement with the experimental data for the solids under study. The Murnaghan's equation has been found to yield significantly large deviations from experimental data. Modifications suggested recently to remove the shortcomings of the Murnaghan's equation have been discussed. Values of isothermal bulk modules KT, pressure derivative of KT′, and the Gruneisen parameter have also been calculated for NaCl under high compressions.

Original languageEnglish
Pages (from-to)757-763
Number of pages7
JournalIndian Journal of Pure and Applied Physics
Issue number10
StatePublished - 1 Oct 1999
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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