Synthesis and Characterization of Mn Doped BiFeO3 Nanoparticles

H. Fukumura, S. Matsui, N. Tonari, T. Nakamura, N. Hasuike, K. Nishio, T. Isshiki, H. Harima Department of Electronics, Kyoto Institute of Technology, Kyoto 606-8585, Japan

and K. Kisoda Department of Physics, Wakayama University, Wakayama 640-8510, Japan

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BiFeO3 is a multiferroic material showing antiferromagnetic ordering and ferroelectric behavior simultaneously. Here, Mn doped BiFeO3 nanoparticles were synthesized up to 10% of Mn composition by a sol gel process. The samples showed high crystallinity with no secondary phase up to 2% of Mn doping. A phonon peak at 1250 cm-1 in undoped BiFeO3 showed anomalous intensity enhancement in the magnetically ordered phase below TN = 643 K due to a spin phonon coupling. This behavior was less pronounced in the Mn doped samples, suggesting a suppression of magnetic ordering between Fe3+ spins by Mn doping.

DOI: 10.12693/APhysPolA.116.47 PACS numbers: 78.30.Hv, 63.20.D-, 78.30.-j