Effect of Mn Substitution for Multiferroic BiFeO3 Probed by High-Resolution Soft-X-Ray Spectroscopy

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Title:	Effect of Mn Substitution for Multiferroic BiFeO3 Probed by High-Resolution Soft-X-Ray Spectroscopy
Authors:	Higuchi, Tohru;Hattori, Takeshi;Sakamoto, Wataru;Itoh, Naoyuki;Shimura, Tetsuo;Yogo, Toshinobu;Yao, Peng;Liu, Yi-sheng;Glans, Per-anders;張經霖;Chang, Ching-lin;Wu, Ziyu;Guo, Jinghua
Contributors:	淡江大學物理學系
Keywords:	BiFeO3 (BF), Mn-doped BiFeO3 [BF(Mn)], multiferroic, X-ray absorption spectroscopy (XAS), soft-X-ray emission spectroscopy (SXES), electronic structure, valence state, electron correlation
Date:	2008-09
Issue Date:	2010-08-10 09:30:24 (UTC+8)
Publisher:	TOKYO : Japan Society of Applied Physics
Abstract:	The electronic structures of BiFeO3 (BF) and Mn-doped BiFeO3 [BF(Mn)] have been studied by X-ray absorption spectroscopy (XAS) and soft-X-ray emission spectroscopy (SXES). BF and BF(Mn) have a mixed valence state of Fe2+ and Fe3+. Their valence band is mainly composed of the O 2p state hybridized with the majority-spin t2g and eg orbitals of Fe 3d state. The conduction band is composed of the minority-spin t2g and eg orbitals of Fe 3d. The band gaps of BF and BF(Mn) are estimated to be 1.3 eV and 2.7 eV, respectively. The increase in band gap with Mn substitution contributes to a change in the bandwidth of the valence band.
Relation:	Japanese Journal of Applied Physics 47(9), pp.7570-7573
DOI:	10.1143/JJAP.47.7570
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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