Growth and characterization of Pb(Mg1/3Nb2/3)O3-PbTiO3-PbZrO3 single crystals with high rhombohedral/tetragonal phase transition temperature

被引:23
作者
Xia, Zhiguo [1 ]
Li, Qiang [1 ]
Zhang, Shaofeng [1 ,2 ]
机构
[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
[2] Bright Crystals Technol Inc, Zhongfei Res Inst Synthet Crystals, Beijing 100018, Peoples R China
基金
中国国家自然科学基金;
关键词
ferroelectrics; crystal growth; piezoelectricity;
D O I
10.1016/j.ssc.2007.10.004
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Ferroelectric single crystals Pb(Mg1/3Nb2/3)O-3-PbTiO3-PbZrO3 (PMN-PT-PZ) near the morphotropic phase boundary (MPB) with the composition. PMN-PT-PZ (0.603/0.347/0.05) (starting materials), were grown directly from the melt by the slow cooling process. The local composition and structure of the as-grown crystals were analysed by energy dispersive X-ray spectrometer (EDS) and X-ray diffraction (XRD), respectively. The electrical properties of the PMN-PT-PZ single crystals oriented along the (001) axis were characterized. The measured dependence of dielectric constants on temperature showed that the rhombohedral/tetragonal phase transition temperature (TR-T) was 127 degrees C, and this TR-T temperature was a significant increase compared to that of PMN-PT single crystals near its MPB. Our results show that the obtained PMN-PT-PZ ferroelectric single crystals are promising for high-temperature applications. (C) 2007 Elsevier Ltd. All rights reserved.
引用
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页码:38 / 42
页数:5
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