Vijayanand, S. and Potdar, H. S. and Joy, P. A. (2009) Origin of high room temperature ferromagnetic moment of nanocrystalline multiferroic BiFeO3. Applied Physics Letters, 94 (18). pp. 182507-1. ISSN Print: ISSN 0003-6951, Online: ISSN 1077-3118

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Single phase nanocrystalline BiFeO3 of average crystallite size >25 nm with very high magnetization at room temperature is synthesized by an autocombustion method. Magnetic measurements above room temperature show deviation between field cooled and zero field cooled magnetization below 645 K, the Neel temperature of the bulk material, indicating intrinsic nature of ferromagnetism. However, observation of a broad magnetic transition above T_N of BiFeO3 and extended up to 800 K suggests the presence of Fe3O4 as a possible magnetic impurity phase. Evidence for the presence of Fe3O4 is obtained from detailed analysis of the powder x-ray diffraction pattern.

Item Type: Article
Subjects: Miscellaneous
Materials Chemistry
Physical Chemistry
Depositing User: Dr. P A Joy
Date Deposited: 25 Feb 2012 11:44
Last Modified: 16 Jun 2014 13:43

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