Preparation and characterization of a new ferroelectric ternary solid solution Pb(Lu1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3

被引：0
|
作者：
机构：
[1] College of Physics and Energy, Fujian Normal University, Fuzhou
[2] Key Laboratory of Optoelectric Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou
来源：
Lai, Fa-Chun | 1600年 / Science Press卷 / 29期
基金：
中国国家自然科学基金;
关键词：
Piezoelectric ceramics; Piezoelectric properties; PLMNT; Solid state reaction;
D O I：
10.15541/jim20130655
中图分类号：
学科分类号：
摘要：
Ceramics of (0.7-x)Pb(Lu1/2Nb1/2)O3-0.3Pb(Mg1/3Nb2/3)O3-xPbTiO3(PLN-PMN-PT) (0.38 ≤ x ≤ 0.46) ternary system were synthesized by means of a two-step columbite precursor method which can effectively suppress the pyrochlore phase. A morphotropic phase boundary (MPB) region in the ternary systems was found in the range of 0.40 ≤ x ≤ 0.44 and the electric properties of the compositions near MPB region were investigated. Those compositions within MPB exhibit good comprehensive piezoelectric properties. The ceramic with composition of 0.29PLN-0.3PMN-0.41PT shows a high Curie temperature of 270℃ and a high rhombohedral-tetragonal phase transition temperature of 135℃, whose piezoelectric coefficient d33, coercive field Ec and remnant polarization Pr are found to be 460 pC/N, 14.8 kV/cm and 34.6 μC/cm2, respectively. The large coercive field and high Tc enable it a promising candidate for application in the piezoelectricity field.
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页码：912 / 916
页数：4
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