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Phase structures and electrical properties of LiSbO doped 0.994KNaNbO-0.004KCuTaO-0.002BiMnO piezoelectric ceramics.

Phase structures and electrical properties of LiSbO doped 0.994KNaNbO-0.004KCuTaO-0.002BiMnO piezoelectric ceramics.

Authors :
Hu, Yaobin
Liu, Xinyu
Jiang, Minhong
Zhang, Xiaowen
Source :
Journal of Materials Science: Materials in Electronics; Jan2013, Vol. 24 Issue 1, p331-335, 5p
Publication Year :
2013

Abstract

LiSbO (LS) doped 0.994KNaNbO-0.004KCuTaO-0.002BiMnO (KNN-KCT-BM) piezoelectric ceramics with excellent properties have been fabricated by conventional ceramic processing. It is found that the dopant of LS has considerable effect on the grain size, phase structure and electrical properties of KNN-KCT-BM ceramics. The KNN-KCT-BM ceramics doped with 4.5 mol% LS ceramics show good electrical properties such as d = 208 pC/N, Q = 95, k = 40.5 %, T = 335 °C, T = 55 °C, ε = 1,190 and rather low dielectric dissipation of tan δ = 1.25 % (1 kHz) and tan δ < 1 % (100 kHz). This indicates that 4.5 mol% LS-doped KNN-KCT-BM piezoceramic is an alternative lead-free piezoelectric material for the development of piezoelectric devices working at high temperature. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
09574522
Volume :
24
Issue :
1
Database :
Complementary Index
Journal :
Journal of Materials Science: Materials in Electronics
Publication Type :
Academic Journal
Accession number :
84582158
Full Text :
https://doi.org/10.1007/s10854-012-0750-5