Murnaghan's equation of state revisited

被引：13

作者：

Fuchizaki, K ^{[1
]}

机构：

[1] Ehime Univ, Dept Phys, Matsuyama, Ehime 7908577, Japan

[2] Inst Mol Sci, Okazaki, Aichi 4448585, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2006年 / 75卷 / 03期

关键词：

equation of state; high pressure; compression curve; bulk modulus; infinitesimal strain;

D O I：

10.1143/JPSJ.75.034601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The expression known as Murnaghan's equation of state in high-pressure research community is mathematically a correct solution to the equation of bulk modulus but is valid only within a very limited parameter space. Moreover, the equation of state in question exhibits a peculiar behavior at high pressures when fitted to compression data. An alternative expression with a much wider range of validity is given. No peculiarity appears in the resultant compression curve. The latter expression thus provides a new tool as an infinitesimal-strain equation of state for quick estimate of compression characteristics of substances.

引用

页数：4