Preparation, structures, and multiferroic properties of single phase Bi{sub 1-x}La{sub x}FeO{sub 3} (x=0-0.40) ceramics

Journal Article · Fri Dec 01 04:00:00 EST 2006 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2390625· OSTI ID:20884919

Shantao, Zhang; Linghua, Pang; Yi, Zhang; Minghui, Lu; Yanfeng, Chen ^[1]

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1. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210092 (China) and Department of Materials Science and Engineering, Nanjing University, Nanjing 210093 (China)

A simple and effective method that solid state reaction followed by quenching process is developed to prepare multiferroic La-substituted BiFeO{sub 3} (Bi{sub 1-x}La{sub x}FeO{sub 3} (BLFO{sub x}) with x=0-0.40) ceramics. X-ray diffraction, x-ray photoelectron spectroscopy, and inductively coupled plasma studies show that the ceramics prepared under the optimized conditions are single phase. A phase transition from rhombohedral to orthorhombic phase is observed near x=0.30. This transition has great effects on the multiferroic properties. Magnetic and electric measurements reveal that the BLFO{sub 0.30} has enhanced multiferroic properties with two times remnant magnetization and polarization of 0.041 emu/g and 22.4 {mu}C/cm{sup 2}, respectively. The enhanced multiferroic properties are attributed to the enhanced magnetoelectric interaction, which results from the La substitution-induced destruction of the spin cycloid. These results show that BiFeO{sub 3}-based perovskite solid solution with no other ferroelectric end member can have improved multiferroic properties via enhancing magnetoelectric interaction. This work may provide some guidelines for further study on BiFeO{sub 3} and BiFeO{sub 3}-based solid solutions.

• OSTI ID: 20884919
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 100; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH COMPOUNDS
CERAMICS
FERROELECTRIC MATERIALS
IRON OXIDES
LANTHANUM COMPOUNDS
MAGNETIZATION
ORTHORHOMBIC LATTICES
PEROVSKITE
PHASE TRANSFORMATIONS
PLASMA
POLARIZATION
QUENCHING
SOLID SOLUTIONS
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY