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Effect of Lattice Anharmonicity on Specific Heat of Alkali Alloys
Author(s) -
Soma T.,
Higuchi H.,
Kagaya H.Matsuo
Publication year - 1985
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/pssb.2221320207
Subject(s) - anharmonicity , alkali metal , specific heat , nearest neighbour , lattice (music) , condensed matter physics , thermodynamics , solid solution , limit (mathematics) , chemistry , materials science , physics , mathematics , metallurgy , organic chemistry , artificial intelligence , computer science , acoustics , mathematical analysis
Using the expression by Trivedi in the high‐temperature limit with nearest‐neighbour central‐force interaction, the anharmonic contributions to the specific heat of the alkali alloys are studied theoretically. The concentration x ‐dependence of the anharmonic coefficient for the specific heat A , defined by CΩ/3 Nk = 1 + AT , is calculated for CS 1−x K x , CS 1−x Rb x , and Rb 1−x K x solid solutions.