%0 Journal Article
%T Structure and electrical properties of ternary BiFeO3-BaTiO3-PbTiO3 high-temperature piezoceramics
%A Zhonghua Yao
%A Ying Liu
%A Zhe Song
%A Zhijian Wang
%A Hua Hao
%A Minghe Cao
%A Zhiyong Yu
%A Hanxing Liu
%J Journal of Advanced Ceramics
%@ 2227-8508
%D 2012
%I 
%R 10.1007/s40145-012-0021-1
%X In the current work, the bulk ternary (0.85-x) BiFeO3-xBaTiO3-0.15PbTiO3 (BF-BTx-PT, x=0.08¨C0.35) 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 d 33 of 60 pC/N, high Curie temperature of 550 ¡ãC, and low sintering temperature of 920 ¡ãC. Measurements also showed that the depoling temperature was 300 ¡ãC, about 150 ¡ãC higher than that of commercialized PZT ceramics, which indicated good temperature stability. BF-BTx-PT ceramics are promising candidates for high temperature applications.
%K ceramics
%K piezoelectric materials
%K barium titanate
%K perovskite
%K ferroelectrics
%U http://link.springer.com/article/10.1007/s40145-012-0021-1