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X‐ray study of debye‐waller factors and debye characteristic temperatures in AgGa(S 1− x Se x ) 2 solid solutions
Author(s) -
Orlova N. S.,
Kochkarik O. E.,
Bodnar I. V.
Publication year - 1994
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170290615
Subject(s) - debye function , anisotropy , debye model , debye , solid solution , thermodynamics , debye length , chemistry , debye–waller factor , ion , crystallography , materials science , condensed matter physics , diffraction , physics , optics , organic chemistry
The Debye‐Waller factors and Debye characteristic temperatures for two principal crystallographic directions in the AgGaS 2 –AgGaSe 2 solid solutions with chalcopyrite structure were determined by an X‐ray powder diffractometry technique as a function of composition and temperature in the range from 80 to 700 K. The anisotropy of both the dynamical characteristics is shown to exist and the character of anisotropy changes with composition. The composition dependences of the Debye‐Waller factors and Debye temperatures are non‐linear. From the experimental data some thermodynamic properties were calculated and the variation of all investigated dynamical characteristics during anion substitution was analyzed.