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On the Pressure Dependence of the Debye Temperature in Solids
Author(s) -
Fang ZhengHua
Publication year - 2000
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200011)222:2<451::aid-pssb451>3.0.co;2-0
Subject(s) - basis (linear algebra) , debye , debye model , nonlinear system , thermodynamics , relation (database) , condensed matter physics , materials science , physics , statistical physics , mathematics , quantum mechanics , computer science , geometry , data mining
A new relation for the pressure dependence of the Debye temperature is derived on the basis of the nonlinear expression for the pressure dependence of the Grüneisen parameter. The application of the new relation to the cases of NaCl and CsI are presented and compared with that of the relation derived on the basis of the linear expression presented by Kumari and Dass (phys. stat. sol. (b) 133 , 101 (1986)) for the pressure dependence of the Grüneisen parameter. The comparison shows that the new relation presented in this paper is better.