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Crystal Structure of Metastable Tetragonal Zirconia up to 1473 K
Author(s) -
Igawa Naoki,
Ishii Yoshinobu
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb00808.x
Subject(s) - tetragonal crystal system , metastability , materials science , crystal structure , crystallography , phase (matter) , lattice constant , atmospheric temperature range , chemistry , thermodynamics , diffraction , physics , optics , organic chemistry
The crystal structure of metastable tetragonal zirconia prepared via the alkoxide method has been investigated at temperatures up to 1473 K, to clarify the similarity between this metastable phase and the tetragonal phase at high temperature. The lattice constants, tetragonality, oxygen shift parameter, and equivalent isotropic thermal parameter of the metastable tetragonal phase are proportional to the temperature. These parameters, when extrapolated to the high‐temperature range, are very similar to those of the high‐temperature tetragonal phase. Present results indicate that the structure of the metastable tetragonal phase is the same as that of the high‐temperature tetragonal phase.