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    題名: Effect of Mn Substitution for Multiferroic BiFeO3 Probed by High-Resolution Soft-X-Ray Spectroscopy
    作者: 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
    貢獻者: 淡江大學物理學系
    關鍵詞: 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
    日期: 2008-09
    上傳時間: 2010-08-10 09:30:24 (UTC+8)
    出版者: TOKYO : Japan Society of Applied Physics
    摘要: 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.
    關聯: Japanese Journal of Applied Physics 47(9), pp.7570-7573
    DOI: 10.1143/JJAP.47.7570
    顯示於類別:[物理學系暨研究所] 期刊論文

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