Crystal Structure Analysis of Barium Titanate - Bismuth Perovskite-type Oxide System Ceramics and Their Piezoelectric Property

扫码查看

原文链接

NETL
NSTL
Trans Tech Publications Ltd

外文摘要：Barium titanate (BaTiO_3, BT) - bismuth lanthanum zinc titanium oxide [(Bi_yLa_(1-y))(Zn_(0.5)Ti_(0.5))O_3, B_yL_(1-y)ZT] solid solution ceramics were prepared to enhance Curie temperature (T_C) of BT, 132 ℃, to 200 ℃ As the raw materials, nanoparticles were used to make sintering temperatures lower. Optimization of calcination and sintering conditions resulted in a formation of a perovskite single-phase, and their densities were always greater than 94 %. The synchrotron XRD measurement revealed that the crystal structures were assigned to rhombohedral 3m. Temperature dependence of dielectric property revealed that for the 0.5BT-0.5BZT ceramics, T_C was 230 ℃. Moreover, La-doping into BT-BZT ceramics resulted in decrease of T_c significantly. Finally, their piezoelectric properties were measured by electric-field dependence of strain at room temperature, and for the 0.6BT-0.4BZT ceramics, the apparent d_(33) was measured at 250 pC/N.

外文关键词：

barium titanatebismuth perovskite-type oxidepiezoelectric propertycrystal structurelead-free ceramics

作者：

Keisuke Yamato、Nobuhiro Kumada、Chikako Moriyoshi、Yoshihiro Kuroiwa、Bong-Yeon Lee、Takashi Iijima、Satoshi Wada

展开 >

作者单位：

Material Science and Technology, Interdisciplinary Graduate School of Medical and Engineering, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8510, Japan

Department of Physical Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan

National Institute of Advanced Industrial Science and Technology, AIST Tsukuba Central 5, Tsukuba, Ibaraki 305-8565, Japan

出版年：

2010

DOI：

10.4028/www.scientific.net/KEM.421-422.38

Key engineering materials

ISSN：1013-9826

年,卷(期)：2010.421/422

被引量2
参考文献量14