Electromechanical properties in rhombohedral BiScO3-PbTiO3 single crystals as a function of temperature

被引：41

作者：

Zhang, SJ ^{[1
]}

Randall, CA ^{[1
]}

Shrout, TR ^{[1
]}

机构：

[1] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 2003年 / 42卷 / 10A期

关键词：

piezoelectric; single crystal; BiScO3-PbTiO3; ferroelectric Curie temperature; electromechanical coupling factor; coercive field;

D O I：

10.1143/JJAP.42.L1152

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single crystals in the BiScO3-PbTiO3 (BSPT) system were grown using the conventional high temperature solution method. The dielectric, piezoelectric and electromechanical properties along <110> direction were investigated as a function of temperature. The Curie temperature was found to be similar to380degreesC with a rhombohedral-tetragonal phase transformation temperature (TR-T) at 300degreesC. The coercive field for <110> oriented crystals was found to be 15 kV/cm with a piezoelectric coefficient (d(33)) of 650 pC/N. The lateral mode electromechanical coupling factor (k(31)) of <110>/<001> cut was around 75% with a piezoelectric coefficient (d(31)) of -800 pC/N. The dielectric, piezoelectric and electromechanical properties were nearly temperature independent from room temperature to 250degreesC, making BSPT crystals promising for sensor and transducer application.

引用

页码：L1152 / L1154

页数：3

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