Open AccessINFLUENCE OF NONSTOICHIOMETRY AND DOPING ON ELECTRICAL PROPERTIES OF (Na1/2Bi1/2)0.92Ba0.08TiO3 CERAMICS
Author(s) -
CHU BAO-JIN,
Guorong Li,
Qingrui Yin,
Zhang Wangzhong,
DaRen Chen
Publication year - 2001
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.50.2012
Subject(s) - materials science , piezoelectricity , doping , depolarization , ceramic , octahedron , condensed matter physics , mineralogy , crystal structure , composite material , crystallography , optoelectronics , chemistry , physics , medicine , endocrinology
Influence of nonstoichiometry and doping on piezoelectric properties and depolarization temperature of lead-free piezoelectric ceramics (Na1/2Bi1/2)0.92Ba0.08TiO3 was studied. Nonstoichiometry of A-site can improve their piezoelectric properties. Doping in B-site has great influence on electric properties, which is similar to the corresponding rules of Pb(Ti,Zr)O3-based ceramics. Variation of coupling effect of A-site cation on BO6 octahedra as results of nonstoichiometry, and the doping in NBBT ceramics leads to variations of the depolarization temperature. The higher the depolarization temperature of Na1/2Bi1/2 TiO3-BaTiO3 ceramics studied,the lower the piezoelectric constant.