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Thermal Expansion Coefficient and Bond Strength in Hg 1− x Cd x Te and Hg 1− x Zn x Te
Author(s) -
Bagot D.,
Granger R.,
Rolland S.
Publication year - 1993
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.2221770205
Subject(s) - thermal expansion , thermodynamics , chemistry , bond strength , analytical chemistry (journal) , materials science , physics , adhesive , organic chemistry , layer (electronics) , chromatography
The thermal expansion coefficient variations in Hg 1− x Cd x Te (MCT) and Hg 1− x Zn x Te (MZT) are analyzed between 4 and 280 K. The phonon density of states (DOS) is modelled with seven Einstein peaks whose weight is adjusted to fit the specific heat variations. The mean Grüneisen coefficient associated with each peak is then deduced from a fit of the experimental linear thermal expansion coefficients. The variation with x of these Grüneisen coefficients allows to compare the bond strengths in MCT and MZT. A better stability of MZT as compared to MCT is deduced.