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    題名: Correlation between magnetic properties and the electronic structures of soft magnetic ternary Fe78−xYxB22 (x = 4–9) bulk metallic glasses
    作者: Liu, M. T.;Ray, S. C.;Tsai, H. M.;Pao, C. W.;Ling, D. C.;Pong, W. F.;Chiou, J. W.;Tsai, M-H;Jang, L. Y.;Pi, T. W.;Lee, J. F.;Lin, C. Y.;Chin, T. S.
    貢獻者: 淡江大學物理學系
    日期: 2008
    上傳時間: 2013-01-15 18:07:15 (UTC+8)
    出版者: Bristol: Institute of Physics Publishing Ltd.
    摘要: Fe and Y K-edge extended x-ray absorption fine structure, Fe(Y) L3,2-edge (L3-edge) x-ray absorption near-edge structure (XANES) and valence-band photoemission spectroscopy (VB-PES) measurements have been carried out to study soft magnetic ternary Fe78−xYxB22 bulk metallic glasses (BMGs). The combined XANES and VB-PES results do not show broadening of the Fe 3d band to support the previous interpretation of the reduction of the magnetic moment in BMGs by Y-induced decrease of exchange splitting of Fe 3d orbitals. Instead, the density of delocalized/itinerant Fe 3d states in the vicinity of the Fermi level is found to be reduced by Y substitution, which reduces the strength of itinerant-states-mediated ferromagnetic coupling between local spins on the Fe ions and the total magnetic moment of the Fe-based BMGs.
    關聯: Journal of Physics: Condensed Matter 20(46), 465105(6pages)
    DOI: 10.1088/0953-8984/20/46/465105
    顯示於類別:[物理學系暨研究所] 期刊論文


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