期刊
SCRIPTA MATERIALIA
卷 72-73, 期 -, 页码 17-20出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2013.10.004
关键词
Crystalline oxides; Electrical properties; Dielectrics; Piezoelectricity
类别
资金
- Technology Commission of Shanghai Municipality [13ZR1430200]
- China Scholarship Council (CSC)
- ONR
The dielectric and piezoelectric properties of [1 1 1]-oriented orthorhombic Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PMN-PT) single crystals (3O multi-domain state) with various domain sizes were investigated by poling control. The free dielectric permittivity (epsilon(T)(33)/epsilon(0)) and longitudinal piezoelectric coefficient (d(33)) were 6400 and 900 pC N-1, respectively, for samples with domain sizes of similar to 2 mu m, nearly twice that of similar to 20 mu m. Together with good temperature stability (Delta d(33)/d(33(25 degrees C)) <8%) up to the orthorhombic tetragonal phase transition temperature, the 3O PMN PT crystals with fine domain structures are promising candidate for sensors and transducers. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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