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    题名: Effect of Pr substitution on the electronic structure of (La1-xPrx)0.85Zr0.15MnO3
    作者: Jan, J.-C.;Chiou, J.-W.;Tsai, H.-M.;Bao, C.-W.;Hsu, B.-C.;Ling, D.-C.;Pong, W.-F.;Tsai, M.-H.
    贡献者: 淡江大學物理學系
    关键词: Perovskite;Lanthanum-doped manganites;XANES
    日期: 2005-06
    上传时间: 2011-10-24 10:36:19 (UTC+8)
    出版者: Elsevier BV
    摘要: We measured Mn L3,2-, K-, O K- and Pr M5,4-edges X-ray absorption near-edge structure (XANES) spectra of (La1−xPrx)0.85Zr0.15MnO3 (denoted as LPZMO) with x = 0, 0.05, 0.1, 0.15 and 0.2 to study their electronic structures and the effect of Pr substitution. An analysis of the Mn L3,2- and the K-edges spectra suggests that LPZMO is an electron-doped system. The average charge state of Mn ion is found to increase with the Pr substitution at low concentration as inferred from the enhancement of the unoccupied ↑spin eg subband in the Mn L3,2-edge XANES spectrum. The Mn L3,2-, O K- and Pr M5,4-edge XANES results revealed changes in the O 2p–Mn 3d and O 2p–Pr 4f hybridized states due to the substitution of La ions by smaller Pr ions.
    關聯: Journal of Electron Spectroscopy and Related Phenomena 144–147, pp.529–532
    DOI: 10.1016/j.elspec.2005.01.080
    显示于类别:[物理學系暨研究所] 期刊論文

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