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X‐ray diffraction study of anharmonic thermal vibrations in β‐AgI
Author(s) -
Piltz R. O.,
Barnea Z.
Publication year - 1987
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889887087235
Subject(s) - anharmonicity , diffraction , wurtzite crystal structure , thermal , crystal (programming language) , thermal motion , crystallography , component (thermodynamics) , materials science , chemistry , molecular physics , physics , condensed matter physics , optics , thermodynamics , computer science , programming language
Intensity data were collected at room temperature from an extended‐face crystal of AgI using Mo Kα radiation. Least‐squares refinement indicates that the thermal motion of the Ag + ions is large with a considerable anharmonic component. The wurtzite positional parameter, u , was found to be 0.3748(2). The proportion of point defects was determined to be no greater than 0.9%. The proportion of random staking faults was determined by two experimental techniques to be no greater than 2%.