Large anisotropy on electromechanical properties of rare-earth and alkaline-earth oxides complex modified PbTiO3 ceramics

H. Wang, W. R. Xue, P. W. Lu, D. W. Shen, Q. T. Zhang, M. Y. Zhao

科研成果: 书/报告/会议事项章节会议稿件同行评审

1 引用 (Scopus)

摘要

The dielectric and piezoelectric properties, the microstructural development and the crystal structures of (Pb/sub 0.88-x/Gd0.08Mex(Ti0.98Mn0.02) O3+y(Sb2O3+Nb2O5)wt.% (x=0-20 mol.%., 0<y<1.5, Me=Ca, Ba or Sr)) were investigated. It was found that the content of the alkaline-earth ions strongly influenced the electromechanical properties of the samples. When Me=15 mol.%, the optimum properties were Kt=55%, Kp=0, Kt/Kp to Omega , Qm=60, epsilon 33T/epsilon 0<250, tan delta <1.5%, and d33=7010-12 c/N. The effects of the poling electric field on those properties were studied. SEM (scanning electron microscopy) and XRD (X-ray diffraction) revealed that the ceramic microstructure clearly changed and that tetragonality (c/a) decreased due to the Me ion doping. It is suggested that both the microstructure and crystal structure are responsible for this behavior. The lower c/a ratio and the microstructure with wide grain boundaries and greater porosity can lead to an increase of the domains parallel to the poling electric field, and hence improve the electromechanical properties.

源语言英语
主期刊名ISAF 1992 - Proceedings of the 8th IEEE International Symposium on Applications of Ferroelectrics
编辑Ahmad Safari, Michael Liu, Angus Kingon, Gene Haertling
出版商Institute of Electrical and Electronics Engineers Inc.
548-550
页数3
ISBN(电子版)0780304659, 9780780304659
DOI
出版状态已出版 - 1992
活动8th IEEE International Symposium on Applications of Ferroelectrics, ISAF 1992 - Greenville, 美国
期限: 30 8月 19922 9月 1992

出版系列

姓名ISAF 1992 - Proceedings of the 8th IEEE International Symposium on Applications of Ferroelectrics

会议

会议8th IEEE International Symposium on Applications of Ferroelectrics, ISAF 1992
国家/地区美国
Greenville
时期30/08/922/09/92

指纹

探究 'Large anisotropy on electromechanical properties of rare-earth and alkaline-earth oxides complex modified PbTiO3 ceramics' 的科研主题。它们共同构成独一无二的指纹。

引用此