Title :
Multiferroic Properties of La, Ba Co-Modified BiFeO3-PbTiO3 Crystalline Solutions
Author :
Cheng, Jinrong ; Chen, Jianguo ; Jin, Dengren ; Yu, Shengwen ; Meng, Zhongyan
Author_Institution :
Shanghai Univ., Shanghai
Abstract :
Solid solutions of La and Ba modified (1-x)BiFeO3-xPbTiO3 were prepared by the mixed oxides method. The 10 at% of La3+ and Ba2+ substituents were utilized to substitute Bi3+ and Pb2+ ions respectively. These cations enter into the crystalline lattice to modify the structure and properties of BiFeO3-PbTiO3. The morphotropic phase boundary of (1-x)(Bi,La)FeO3-x(Pb,Ba)TiO3 (BLF-PBT) appears at x=0.4 accompanying by the rhombohedral-tetragonal phase transition. It is found that (1-x)BLF-xPBT reveals enhanced ferroelectric and magnetic properties in the vicinity of the MPB. The remnant polarization and magnetization achieve of 26 muC/cm and 0.06 emu/g, respectively. Our results indicated that (1-x)Bi(Fe,Ga)O3-xPbTiO3 is of the insulating and switchable multiferroics.
Keywords :
barium compounds; bismuth compounds; crystal structure; dielectric polarisation; ferroelectricity; lanthanum compounds; lead compounds; magnetisation; multiferroics; piezoelectric materials; solid-state phase transformations; BiLaFeO3-PbBaTiO3; crystalline lattice; crystalline solutions; ferroelectric properties; magnetic properties; magnetization; mixed oxide method; morphotropic phase boundary; multiferroic properties; piezoelectric solid solutions; remnant polarization; rhombohedral-tetragonal phase transition; Crystallization; Dielectric measurements; Dielectrics and electrical insulation; Ferroelectric materials; Lead; Magnetic properties; Magnetization; Piezoelectric polarization; Solids; X-ray scattering;
Conference_Titel :
Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on
Conference_Location :
Nara
Print_ISBN :
978-1-4244-1334-8
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2007.4393274
