Journal
CERAMICS INTERNATIONAL
Volume 38, Issue 2, Pages 1683-1686Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2011.09.061
Keywords
BNT ceramics; Microstructure; TEM
Categories
Funding
- Nation Science Foundation of China [10874069, 50632030, 10974083]
- State key program for basic research [2007CB613202, 2009CB929503]
- New Century excellent talents in University [NCET-09-0451]
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The microstructure and electric properties of the rhombohedral-tetragonal morphotropic phase boundary (MPB) composition 0.8Bi(1/2)Na(1/2)TiO(3)-0.2Bi(1/2)K(1/2)TiO(3) have been investigated. X-ray and electron diffraction results substantiate the co-existence of tetragonal and rhombohedral phases. The ferroelectric domains were clearly observed by electron microscopy. The oxygen octahedron tilting of the samples was studied by SAED. Both saturated polarization electric field and butterfly shaped strain electric field hysteresis loops prove that the MPB composition shows typical ferroelectric nature. The detailed microstructure property characterization may shed light on the physical property of further work on BNT-BKT around morphotropic phase boundary. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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