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Structural and anisotropic thermal expansion correlation of Li 2 ZrO 3 at different temperatures
Author(s) -
Heiba Z. K.,
ElSayed Karimat
Publication year - 2002
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/s0021889802011214
Subject(s) - anisotropy , thermal expansion , rietveld refinement , materials science , diffraction , lattice (music) , powder diffraction , thermal , crystal structure , condensed matter physics , crystallography , thermodynamics , chemistry , physics , optics , composite material , acoustics
Structural and thermal expansion studies of Li 2 ZrO 3 were carried out by recording X‐ray powder diffraction patterns at five temperatures, 82, 198, 300, 423 and 573 K. The Rietveld refinement method was used for the analysis. There were large anisotropic changes in the lattice parameters as a function of temperature, slight changes in the fractional coordinates of the different atoms, and anisotropic changes in the interatomic distances between the different cations. The correlation of these anisotropies with the structure is considered.