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Temperature variation of the Grüneisen parameter of copper
Author(s) -
Gupta R. P.,
Sharma P. K.,
Pal S.
Publication year - 1966
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.19660180113
Subject(s) - copper , reciprocal , reciprocal lattice , thermodynamics , variation (astronomy) , space (punctuation) , materials science , function (biology) , chemistry , physics , metallurgy , quantum mechanics , linguistics , philosophy , evolutionary biology , astrophysics , diffraction , biology
The temperature variation of the Grüneisen parameter γ for copper is calculated from the observed pressure derivatives of the elastic constants using the electron gas model proposed by one of the present authors. Microscopic Grüneisen parameters, γ q,i , are calculated as a function of the wave number q along the six directions [100], [110], [111], [210], [211], and [221] in reciprocal space and are averaged by a modification of Houston's spherical six‐term integration method. The calculated value of γ is found to be in good agreement with the experimental values of Rubin et al.