Jiang Yihang, Qin Baoquan, Chen Yi, Huang Wei, Zhao Yi, Jiang Yuzhi, Xiao Dingquan, Zhu Jianguo
College of Materials Science and Engineering, Sichuan University, Chengdu, China.
IEEE Trans Ultrason Ferroelectr Freq Control. 2007 Dec;54(12):2505-9. doi: 10.1109/TUFFC.2007.568.
The ternary system of yBiGaO(3)-(1-x-y)BiScO(3)-xPbTiO(3) (BGS-PT) ceramics was prepared by using conventional mixing oxide processing. X-ray diffraction analysis revealed that the BGS-PT ceramics showed the perovskite structure. The Curie temperature (TC) of BGSPT ceramics was found to increase with increasing BiGaO3 content. However, a larger BiGaO3 content led to sharply decreased piezoelectric properties, and the secondary phase was formed in the BGS-PT system. BGS-PT ceramics with x = 0.56, y = 0.19 showed a high Curie temperature T(C) and a large piezoelectric constant d(33) of 501??C and 152 pC/N, respectively. The high T(C) of BGS-PT ceramics with usable piezoelectric properties suggests future high-temperature applications.
采用传统的混合氧化物工艺制备了yBiGaO(3)-(1-x-y)BiScO(3)-xPbTiO(3)（BGS-PT）陶瓷三元体系。X射线衍射分析表明，BGS-PT陶瓷呈现钙钛矿结构。发现BGSPT陶瓷的居里温度（TC）随BiGaO3含量的增加而升高。然而，较大的BiGaO3含量导致压电性能急剧下降，且在BGS-PT体系中形成了第二相。x = 0.56、y = 0.19的BGS-PT陶瓷分别显示出501℃的高居里温度T(C)和152 pC/N的大压电常数d(33)。具有可用压电性能的BGS-PT陶瓷的高居里温度预示着其未来在高温领域的应用前景。
