%0 Journal Article
%T Effect of Y―doping on the Ferroelectric Properties of BSPTHigh―temperature Piezoelectric Ceramics
%A LI Qi-Shou
%A XIAO Ding-Quan
%A ZHU Jian-Guo
%J 无机材料学报
%D 2010
%I Science Press
%R 10.3724/sp.j.1077.2011.00185
%X (1― x)Bi(Sc1― yY y)O3― xPbTiO3(BSYPT― x/y) ceramics were prepared by theconventional mixed oxide method, and their crystal structure, microstructure, andferroelectric properties were investigated. XRD analyses show that the crystalstructure of BSYPT― x/y ceramicschanges from rhombohedral to tetragonal symmetry with increasing of PbTiO3amount. The introduction of BiYO3 into BiScO3―PbTiO3solid solution would cause a shift of morphotropic phase boundary (MPB) of BSYPT― x/y system from x=0.62, y=0.05 to x=0.56, y=0.20. The BYSPT― x÷y ceramics with x=0.58 and y=0.15 showthe pinched hysteresis loops, which can be attributed to the pinned domainwalls of the dipolar defects following the substitution of Sc3+ and Ti4+ions for Y3+ ions in B site of BYSPT system.
%K BSYPT- x/ y high Curie temperaturepiezoelectric ceramicsferroelectric properties
%U http://www.jim.org.cn/fileup/PDF/20110215.pdf