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Title: Analysis of high pressure equations of state for sodium halides
Authors: Meenakshi, S
Sharma, B S
Issue Date: Oct-1999
Publisher: NISCAIR-CSIR, India
Abstract: 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.
Page(s): 757-763
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.37(10) [October 1999]

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