High room temperature ferromagnetic moment of Ho substituted nanocrystalline BiFeO3

TitleHigh room temperature ferromagnetic moment of Ho substituted nanocrystalline BiFeO3
Publication TypeJournal Article
Year of Publication2010
AuthorsThakuria, P, Joy, PAlias
JournalApplied Physics Letters
Volume97
Issue16
Pagination162504
Date PublishedOCT
ISSN0003-6951
Abstract

Magnetic properties of trivalent rare-earth ion substituted nanocrystalline BiFeO3 have been studied for the compositions Bi0.875R0.125FeO3 (R=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb). All compositions show ferromagnetic characteristics at room temperature, with enhanced magnetization after substitution. Very high magnetization (at 6 T), almost three times that of the unsubstituted composition, is observed for R=Ho, and highest remnant magnetization is obtained for R=Nd and Sm. The magnetic transition temperature is increased by similar to 20 K for R=La. The results show that it is possible to tune the magnetic characteristics of the nanocrystalline multiferroic BiFeO3 by the choice of the rare-earth ion. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3502481]

DOI10.1063/1.3502481
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

3.820

Divison category: 
Physical and Materials Chemistry