期刊
MATERIALS RESEARCH BULLETIN
卷 48, 期 1, 页码 131-136出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2012.10.019
关键词
Ceramics; X-ray diffraction; Dielectric properties; Ferroelectricity; Piezoelectricity
资金
- National Natural Science Foundation of China [91122020]
- Fund of Key Projects of Fujian Provincial [2010H0023]
The ternary ferroelectric ceramics Pb(Yb1/2Nb1/2)O-3-Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PYN-PMN-PT), in the vicinity of morphotropic phase boundary (MPB) region, have been prepared by a two-step synthetic process. The ternary phase diagram at room temperature has been established based on the XRD data analysis, which exhibits a curved MPB region. The dielectric, ferroelectric and piezoelectric properties have been characterized, indicating the electrical properties can be adjusted regularly by choosing compositions. The Curie temperature T-C of ternary system varied from 165 to 370 degrees C. With the increase of PMN content, the piezoelectric coefficients d(33) increase from 373 to 505 pC/N, and the coercive field E-c decrease from 18 to 6 kV/cm. The results show that the PYN-PMN-PT ternary system can be a potential material for high temperature applications. (C) 2012 Elsevier Ltd. All rights reserved.
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