Electronic structure and magnetic properties of Al-doped Fe3O4 films studied by x-ray absorption and magnetic circular dichroism
學年 93
學期 2
出版（發表）日期 2005-02-01
作品名稱 Electronic structure and magnetic properties of Al-doped Fe3O4 films studied by x-ray absorption and magnetic circular dichroism
作品名稱（其他語言）
著者 Yang, C. K.; Chiou, J. W.; Tsai, H. M.; Pao, C. W.; Jan, J. C.; Ray, S. C.; Yeh, C. L.; Huang, K. C.; Hsueh, H. C.; Pong, W. F.; Tsai, M.-H.; Hsieh, H. H.; Lin, H. J.; Hou, T. Y.; Hsu, J. H.
單位 淡江大學物理學系
出版者 College Park: American Institute of Physics
著錄名稱、卷期、頁數 Applied Physics Letters 86(6), pp.062504(3pages)
摘要 The electronic structure and magnetic properties of Al-doped Fe3O4 films at various Al concentrations were investigated by Al and O K-edge x-ray absorption near-edge structure (XANES) and Fe L3,2-edge magnetic circular dichroism (MCD) measurements. The O K-edge XANES spectra reveal that the intensity of O 2p–Fe 3d hybridized states decreases linearly as the Al concentration increases, suggesting that nonmagnetic Al substitution reduces couplings of the O 2p with Fe 3d orbitals. The Fe L3-edge MCD spectra show that the intensities of MCD features decrease as the Al concentration increases, which suggests that Al substitution reduces the magnetic moments of Fe ions. The Fe L3,2 XANES spectra suggest the absence of mixed valence states in agreement with previous x-ray resonance scattering measurements.
關鍵字 iron compounds; aluminium; magnetic thin films; ferromagnetic materials; magnetic moments; valence bands; impurity distribution; doping profiles; XANES; impurity states; magnetic circular dichroism; exchange interactions (electron)
語言 en
ISSN 0003-6951 1077-3118
期刊性質 國外
收錄於
產學合作
通訊作者 Pong, W. F.
審稿制度
國別 USA
公開徵稿
出版型式 紙本 電子版
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