Analysis of volume dependence of Grüneisen ratio

✍ Scribed by S.K. Srivastava; Pallavi Sinha

• Book ID: 103887611
• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 217 KB
• Volume: 404
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2009.08.005

✦ Synopsis

Various models on volume dependence of the Gr üneisen ratio have been analyzed in the present study. The Sharma model [Mod. Phys. Lett. B 22/31 (2008) 3113] is found to be similar to that used by Nie [Phys. Stat. Sol. (b) 219 ( 2004) 241] on the basis of approximation made by Jeanloz [J. Geophys. Res. 94 (1989) 5929]. The Nie expression is amended in a manner so that the resulted expression follows the constraint of high pressure thermodynamics in the limit of infinite pressure. The newly developed relationship is applied successfully on materials for which experimental data are accessible such as epsilon-iron, NaCl, Li, Na, and K.