Title :
Dielectric and multiferroic properties of (Bi,La)FeO3-PbTiO3 ceramics
Author :
Chen, J.G. ; Feng, L.Y. ; Shi, G.Y. ; Zhao, L. ; Yu, S.W. ; Cheng, J.R.
Author_Institution :
Sch. of Mater. Sci. & Eng., Shanghai Univ., Shanghai, China
Abstract :
0.57(Bi0.8La0.2)FeO3-0.43PbTiO3 (BLF-PT) ceramics were successfully prepared by sol-gel technique combined with solid-state reaction method. X-ray diffraction (XRD) results revealed that single crystallites with rhombohedral phase could be obtained at 600 °C for 2 h, which is 150 °C lower than that required to prepare single phase material with the same composition from solid-state reactions. The average grain size of the powders was ~60 nm, determined using Transmission electron microscopy (TEM). The analysis of Scanning electron microscopy (SEM) showed that the sintered specimens were dense with the grain size of 2-4 μm. The remanant polarization and magnetization of BLF-PT ceramics were 36 μC/cm2 and 0.08 emu/g.
Keywords :
X-ray diffraction; bismuth compounds; crystallites; dielectric polarisation; ferroelectric ceramics; grain size; lanthanum compounds; lead compounds; magnetic particles; multiferroics; permittivity; remanence; scanning electron microscopy; sol-gel processing; transmission electron microscopy; (Bi0.8La0.2)FeO3-PbTiO3; SEM; TEM; X-ray diffraction; XRD; ceramics; dielectric properties; grain size; magnetization; multiferroic properties; permittivity; powders; remanant polarization; rhombohedral phase; scanning electron microscopy; single crystallites; single phase material; sintering; sol-gel technique; solid-state reaction; temperature 600 degC; time 2 hr; transmission electron microscopy; Ceramics; Dielectric constant; Magnetic properties; Powders; Temperature measurement; PbTiO3; dielectric; multiferroic; sol-gel;
Conference_Titel :
Applications of Ferroelectrics (ISAF), 2010 IEEE International Symposium on the
Conference_Location :
Edinburgh
Print_ISBN :
978-1-4244-8190-3
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2010.5712253
