Preparation, structures, and multiferroic properties of single-phase BiRFeO3, R = La and Er ceramics

resumo

A simple and effective method of solid state reaction followed by quenching process is used to prepare multiferroic Er3+ and La3+ doped BiFeO3 ceramics. X-ray diffraction patterns indicated that these ceramics were of single-phase perovskite structure. Doping with La enhanced the dielectric, ferroelectric and ferromagnetic properties of BiFeO3. A-site substitution with the La and Er ions has been found to suppress the spiral spin structure of BiFeO3 giving rise to the appearance of room-temperature weak ferromagnetism. The enhanced multiferroic properties are attributed to the enhanced magnetoelectric interaction, which results from the La and Er substitution-induced destruction of the spin cycloid. (C) 2010 Elsevier B.V. All rights reserved.

palavras-chave

BIFEO3 THIN-FILMS; MAGNETOELECTRIC PROPERTIES; FERROELECTRICITY; POLARIZATION; DEPENDENCE; CRYSTAL; SYSTEM

categoria

Materials Science; Physics

autores

Rai, R; Mishra, SK; Singh, NK; Sharma, S; Kholkin, AL

nossos autores

agradecimentos

Radheshyam Rai gratefully acknowledges Department of Science and Technology, India for granting financial support through a Young Scientist Project.

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