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    题名: X-ray absorption spectroscopy studies of La1-xSrxFeO3
    作者: 張經霖;Chang, C. L.;Chern, G.;Tai, M. F.;Su, Y. W.;Dong, C. L.;Liu, S. Y.;Hwang, C. S.;鄭伯昆;Tseng, P. K.
    贡献者: 淡江大學物理學系
    日期: 1999-08
    上传时间: 2009-12-31 10:14:02 (UTC+8)
    出版者: Japan Society of Applied Physics
    摘要: We report the Fe K-edge and La L2,3-edge x-ray absorption spectroscopy (XAS) studies of a series of La1-xSrxFeO3 samples. The chemical shift and the pre-edge feature strength of Fe K-edge spectra show that both the Fe valence and its 3d holes increase with Sr concentration up to x=0.8 then saturate. Systematic variations in the whiteline intensity and the above-edge feature in the La L2,3-edge XAS spectra with Sr concentration indicate that the local structure and the electronic state of La are both affected by Sr doping. The correlation between the Fe valence change and the structural variation are briefly discussed.
    關聯: Japanese journal of applied physics 38 Suppl.38-1, pp.108-110
    DOI: 10.7567/JJAPS.38S1.108
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