Monoclinic-to-Tetragonal Phase Transformation in a Ceramic Rare-Earth Orthoniobate, LaNbO4

The monoclinic‐to‐tetragonal phase transformation in LaNbO4 has been investigated by X‐ray diffraction and dilatometry. Based on the experimental results and theoretical concerns (Landau theory and thermodynamics), it is suggested that this transformation is second order in nature.

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1997-03, Vol.80 (3), p.803-806
Main Authors: Jian, Li, Wayman, C. M.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Crystalline state (including molecular motions in solids)
Crystallographic aspects of phase transformations
pressure effects
Exact sciences and technology
Physics
Structure of solids and liquids
crystallography
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Description
Summary:The monoclinic‐to‐tetragonal phase transformation in LaNbO4 has been investigated by X‐ray diffraction and dilatometry. Based on the experimental results and theoretical concerns (Landau theory and thermodynamics), it is suggested that this transformation is second order in nature.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1997.tb02905.x