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Journal of Advanced Ceramics

Authors

Zhonghua YAO, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Key Laboratory of Advanced Technology for Specially Functional Materials, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China
Ying LIU, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Key Laboratory of Advanced Technology for Specially Functional Materials, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China
Zhe SONG, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Key Laboratory of Advanced Technology for Specially Functional Materials, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China
Zhijian WANG, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Key Laboratory of Advanced Technology for Specially Functional Materials, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China
Hua HAO, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Key Laboratory of Advanced Technology for Specially Functional Materials, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China
Minghe CAO, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Key Laboratory of Advanced Technology for Specially Functional Materials, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China
Zhiyong YU, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Key Laboratory of Advanced Technology for Specially Functional Materials, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China
Hanxing LIU, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Key Laboratory of Advanced Technology for Specially Functional Materials, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China

Keywords

ceramics, piezoelectric materials, barium titanate, perovskite, ferroelectrics

Abstract

In the current work, the bulk ternary (0.85-x) BiFeO3-xBaTiO3-0.15PbTiO3 (BF-BTx-PT, x=0.08-0.35) system has been studied as a potential high-temperature piezoceramics. Samples with various content of BT were prepared via solid-state route, and pure perovskite phase was confirmed by X-ray diffraction. The temperature dependence of dielectric constants confirmed the decrease of Curie temperature with increasing BT content. It was found that the morphotropic phase boundary (MPB) composition of BF-BTx-PT ceramics was in the vicinity of x=0.15, which exhibits optimal properties with piezoelectric constant d33 of 60 pC/N, high Curie temperature of 550 ℃, and low sintering temperature of 920 ℃. Measurements also showed that the depoling temperature was 300 ℃, about 150 ℃ higher than that of commercialized PZT ceramics, which indicated good temperature stability. BF-BTx-PT ceramics are promising candidates for high temperature applications.

Publisher

Tsinghua University Press

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