Twinning domain in 67Pb(Mg 1/3 Nb 2/3 )O 3 –33PbTiO 3 ferroelectric complex perovskite crystal grown by the Bridgman method

Single crystals of 67Pb(Mg 1/3 Nb 2/3 )O 3 –33PbTiO 3 (PMN-PT, PMNT) relaxor-based complex perovskite solid solution grown by Bridgman method have pseudo-cubic symmetry under ambient conditions. Examination by means of polarized light microscopy showed that the microstructure of the crystals was dom...

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Bibliographic Details
Published in:Journal of materials research 2001-05, Vol.16 (5), p.1252-1255
Main Authors: Li, Donglin, Wang, Pingchu, Pan, Xiaoming, Luo, Haosu, Yin, Zhiwen
Format: Article
Language:English
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Summary:Single crystals of 67Pb(Mg 1/3 Nb 2/3 )O 3 –33PbTiO 3 (PMN-PT, PMNT) relaxor-based complex perovskite solid solution grown by Bridgman method have pseudo-cubic symmetry under ambient conditions. Examination by means of polarized light microscopy showed that the microstructure of the crystals was dominated by a large number of coarse twin domains. It was confirmed that the most common composition planes were {110} in addition, {112} planes were also observed. These twins may be associated with the transformation of PMNT complex perovskite from the cubic to tetragonal upon a decrease in temperatures. The morphology of the domain structure may be explained from the theory of martensitic transformation.
ISSN:0884-2914
2044-5326
DOI:10.1557/JMR.2001.0176