A study of disorder in the arrangement of Pb atoms of the PbFe0.5Nb0.5O3 single crystals above the curie point

A precision X-ray diffraction study of PbFe 0.5 Nb 0.5 O 3 crystal in a paraelectric phase at 160°C has shown the presence of small disordered displacements of the Pb atoms from their sites in the ideal perovskite structure. Several models of such displacements were considered. The lowest discrepanc...

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Bibliographic Details
Published in:Phase transitions 1999-01, Vol.68 (4), p.621-629
Main Authors: Kolesova, R., Kolesov, V., Kupriyanov, M., Skulski, R.
Format: Article
Language:English
Subjects:
Ferroelectrics
Phase transition
X-ray diffraction
Online Access:Get full text
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Summary:A precision X-ray diffraction study of PbFe 0.5 Nb 0.5 O 3 crystal in a paraelectric phase at 160°C has shown the presence of small disordered displacements of the Pb atoms from their sites in the ideal perovskite structure. Several models of such displacements were considered. The lowest discrepancy factor R is 0.0472.
ISSN:0141-1594
1029-0338
DOI:10.1080/01411599908224538