期刊
SCRIPTA MATERIALIA
卷 158, 期 -, 页码 71-76出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2018.08.030
关键词
MPB; Bi1-xErxFe097Ti03O3; Phase constitution; Electric behavior; Magnetodielectric
类别
资金
- National Natural Science Foundation of China (NSFC) [51472063, 51772065, 51621091]
Morphotropic phase boundaries (MPB) consisting of rhombohedral and orthorhombic phases formed within the range of 0.1 <= x <= 0.15 in Bi1-xErxFe0.97Ti0.3O3 ceramics. Orthorhombic phase transition was verified by the appearance of a new mode at 310 cm(-1) in Raman spectra. Bridging phases as intermedia phases of MPB were rare in Bi1-xErxFe0.97Ti0.3O3. Polarization and permittivity improved at MPB. Moreover, impedance spectroscopy revealed additional arcs with a distinct small polaron conduction mechanism. Er3+ ions enhanced magnetic properties and induced a permittivity change at Neel temperature. The magnetodielectric effect resulted in a permittivity change rate of similar to 1% at 10000 Oe. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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