Title :
Feature of morphotropic phase boundary of (1-x)Bi Ga,Sc)O3-xPbTiO3 high temperature piezoelectric ceramics
Author :
Jiang, Yihang ; Qin, Baoquan ; Jiang, Yuzhi ; Xiao, Dingquan ; Zhu, Jianguo
Author_Institution :
College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China
Abstract :
(1-x)Bi(Ga,Sc)O3-xPbTiO3 (BGSPT) ceramics were fabricated by using conventional mixed oxide ceramic processing. It was found that the introduction of BiGaO3 into BiScO3-PbTiO3 system would cause a shift of morphotropic phase boundaries (MPB), from x=0.64, y=0 to x=0.58, y=0.115; and an increasing of Curie temperature (Tc) near MPB, from 450??_C up to 482??_C, respectively. BGSPT ceramics, possessing the high Tc (over 480 ??_C) and high piezoelectric coefficient (d33=274 pC/N), showed the different rule of the Curie temperature near MPB versus the end member tolerance factor (t). The mechanism of higher Tc in BGSPT system was also proposed.
Keywords :
Ceramics; Educational institutions; Materials science and technology; Temperature;
Conference_Titel :
Applications of Ferroelectrics, 2008. ISAF 2008. 17th IEEE International Symposium on the
Conference_Location :
Santa Re, NM, USA
Print_ISBN :
978-1-4244-2744-4
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2008.4693836
