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Title: Analysis of high pressure equations of state for solids
Authors: Lal, K
Singh, C P
Chauhan, R S
Keywords: Pressure derivative of bulk modulus;Infinite pressure behaviour;hcp iron;Constraints for K'∞
Issue Date: Jan-2009
Publisher: CSIR
Abstract: Four equations of state for solids with adjustable parameter K'∞, the pressure derivative of bulk modulus at infinite pressure have been studied. These equations are the Keane EOS, the Stacey reciprocal K' - EOS, the generalized Rydberg EOS and the Roy-Roy EOS. It is found that the Keane EOS and the Stacey EOS are very similar requiring K'∞ to be considerably larger than 5/3. The generalized Rydberg EOS yields satisfactory results with a value of K'∞ = 5/3. For the Roy-Roy EOS, K'∞ has been found to remain between 5/3 and 2. This has been demonstrated by calculating P, K and K' for hcp iron at different compressions.
Page(s): 28-31
ISSN: 0019-5596
Appears in Collections:IJPAP Vol.47(01) [January 2009]

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