The Grüneisen parameter at extreme compression and the melting behaviour of some binary solids using the Burakovsky-Preston model
Abstract
The generalized free volume formula and the Burakovsky-Preston model have been used to determine a new relationship for the gamma infinity in terms of pressure derivative of bulk modulus and the third- order Grüneisen parameter, both at infinite pressure. The validity of the thermodynamic constraint has been established firmly according to which the pressure derivative of bulk modulus K’∞ is greater than the third-order Grüneisen parameter λ∞ in the limit of infinite pressure. The difference between K’∞ and λ∞ has been found in terms of ϒ∞. The Burakovsky-Preston model with ϒ∞ =1/2 has been used in the Lindemann law of melting to predict melting curves of NaCl, NaF, LiF, MgO, CaF2, SiC at high pressures in good agrement with the available experimental data.
Fields of Study & Subjects
High-pressure geophysics and materials
Metallurgical Processes and Thermodynamics
High-Velocity Impact and Material Behavior
Publication details
- Journal / source
- High Temperatures-High Pressures
- Publisher
- Old City Publishing, Inc
- Volume
- 54
- Issue
- 4
- Pages
- 339–350
- Publication date
- 1 January 2026
- Language
- NR