Volume and Temperature Dependence of the Second Grüneisen Parameter of NaCl

Volume and pressure dependence of the Grüneisen parameterγat high temperature

“…For convenience of comparison, the results given by Fang [2] with Eq. (1) and the results given by Nie [3] and Chuan-Hui [4] with Eq. (3) are also listed together with our calculated results.…”

“…The Grüneisen parameter is one of the important physics quanta that characterize the anharmonic properties of solids. Recently, many theoretical models have been established to calculate the Grüneisen parameter γ, and the relation between the Grüneisen parameter γ and the volume V or the pressure P have been studied [1][2][3][4].…”

“…, q 0 is the zero-pressure second Grüneisen parameter, and n is a positive constant, and they obtained [3,4] ( )…”

“…(12), we apply it to the experimental data of four solids (NaCl, Li, Na, and K) in different pressure ranges as in Ref. [3]. The parameters , A 0 B and 0 B′ are listed in Table 1.…”

“…The experimental values of 0 B and 0 B′ are the same as those in Ref. [3] for the sake of comparison. The value of A can be obtained by fitting the experimental data on the Grüneisen parameter at high temperature and high pressure.…”