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Debye‐Waller Factors and Elastic Constants for Beryllium Oxide at Temperatures between 10 and 720 K (I). Anisotropy of Inoic Mean‐Square Displacements
Author(s) -
Sirota N. N.,
Kuzmina A. M.,
Orlova N. S.
Publication year - 1992
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.2170270524
Subject(s) - square (algebra) , anisotropy , beryllium , materials science , debye model , debye , beryllium oxide , oxide , condensed matter physics , thermodynamics , chemistry , metallurgy , physics , optics , geometry , mathematics , organic chemistry
The Debye‐Waller factors and the mean‐square dynamics displacements of the Be and O ions in beryllium oxide are obtained from X‐ray diffraction powder data over the temperature range from 10 to 720 K for different crystallographic directions. The observed anisotropy of these mean‐square displacements is discussed.