DocumentCode :
2233584
Title :
Dielectric and piezoelectric enhancements in the BiFeO3-PbTiO3 solid solutions with Gd doping
Author :
Shi, Guiyang ; Chen, Jianguo ; Qi, Yufa ; Yu, Shengwen ; Cheng, Jinrong
Author_Institution :
Sch. of Mater. Sci. & Eng., Shanghai Univ., Shanghai, China
fYear :
2009
fDate :
23-27 Aug. 2009
Firstpage :
1
Lastpage :
4
Abstract :
Gadolinium doped BiFeO3-PbTiO3 ((Bi1-xGdx)FeO3-PbTiO3, BGF-PT) crystalline solution ceramics for x=0, 0.1, 0.2 and 0.3 are studied in this report. X-ray diffraction (XRD) result reveals that all ceramics are in single perovskite structure. Phase transition from rhombohedral to tetragonal is observed at x=0.1. Enhanced dielectric properties with k=863 and tandelta=0.023 at the frequency of 102 Hz are obtained in BGF-PT of x=0.2. The Curie temperature of BGF-PT for x=0.2 is achieved to 430degC, which is much higher than La doped BiFeO3-PbTiO3. Significant piezoelectric enhancements is also found in the BGF-PT ceramics. Our results indicate that BGF-PT is a competitive high temperature piezoelectric material.
Keywords :
X-ray diffraction; bismuth compounds; dielectric losses; dielectric polarisation; doping profiles; ferroelectric Curie temperature; gadolinium compounds; lead compounds; permittivity; piezoceramics; solid-state phase transformations; (Bi1-xGdx)FeO3-PbTiO3; Curie temperature; X-ray diffraction; XRD; dielectric constant; dielectric loss; dielectric property; electric polarization; gadolinium doped ceramics; high temperature piezoelectric material; perovskite structure; piezoelectric enhancement; rhombohedral-tetragonal phase transition; solid solutions; temperature 430 C; Acoustic measurements; Ceramics; Crystallization; Dielectric measurements; Piezoelectric materials; Powders; Solids; Temperature sensors; X-ray diffraction; X-ray scattering; dielectric properties; piezoelectric properties; solid solution method;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applications of Ferroelectrics, 2009. ISAF 2009. 18th IEEE International Symposium on the
Conference_Location :
Xian
ISSN :
1099-4734
Print_ISBN :
978-1-4244-4970-5
Electronic_ISBN :
1099-4734
Type :
conf
DOI :
10.1109/ISAF.2009.5307560
Filename :
5307560
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2233584
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