Title :
Enhanced piezoelectric properties of 0.60 BiFeO3-0.35 PbTiO3-0.05 Pb(Zn1/3Nb2/3)O3 ceramics for high temperature applications
Author :
Jiajia Jiang ; Jianguo Chen ; Guoxi Jin ; Yingjie Dong ; Jinrong Cheng
Author_Institution :
Sch. of Mater. Sci. & Eng., Shanghai Univ., Shanghai, China
Abstract :
A series of solid solutions 0.60 BiFeO3-0.35 PbTiO3-0.05 Pb(Zn1/3Nb2/3)O3 (0.60BF-0.35PT-0.05PZN) were fabricated by solid state reaction method. This ternary system possessed the coexistence of both rhombohedral (R3c) and tetragonal (P4mm) phase. The 0.60BF-0.35PT-0.05PZN ceramics were mechanically and electrically robust and can be poled to obtain a high piezoelectricity. Sintering temperature had a strong influence on the structures and properties. The rhombohedral phase decreased with the increase of sintering temperature, which indicated the rhombohedral phase is metastability. The specimens exhibited the best dielectric and piezoelectric properties at sintering temperature of 1020 °C. After quenching at 650 °C, the content of tetragonal phase reduced, the dielectric constant increased, the piezoelectric constant d33 could be enhanced from 55 pC/N to 65 pC/N. In addition, the temperature stability of the ternary ceramic was also improved. The enhanced piezoelectric properties and high Curie temperature indicated that BF-PT-PZN ceramics were one of promising candidates for high temperature piezoelectric applications.
Keywords :
bismuth compounds; crystal structure; dielectric polarisation; ferroelectric Curie temperature; lead compounds; permittivity; piezoceramics; sintering; solid solutions; BiFeO3-PbTiO3-Pb(Zn0.33Nb0.66)O3; Curie temperature; dielectric constant; dielectric properties; electrically robust ceramics; mechanically robust ceramics; metastability; piezoelectric constant; piezoelectric properties; piezoelectricity; rhombohedral phase; sintering; solid solutions; solid state reaction method; temperature 1020 degC; temperature 650 degC; temperature stability; ternary system; tetragonal phase; Ceramics; Dielectric constant; Scanning electron microscopy; Temperature; Temperature measurement; Temperature sensors; BiFeO3-PbTiO3; high Curie temperature; piezoelectric; quench;
Conference_Titel :
Applications of Ferroelectrics, International Workshop on Acoustic Transduction Materials and Devices & Workshop on Piezoresponse Force Microscopy (ISAF/IWATMD/PFM), 2014 Joint IEEE International Symposium on the
Conference_Location :
State College, PA
DOI :
10.1109/ISAF.2014.6922983
