淡江大學機構典藏:Item 987654321/27910
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    题名: Comparison of electronic structures of orthorhombic and hexagonal manganites studied by X-ray absorption spectroscopy
    作者: Asokan, A.;Dong, C. L.;Bao, C. W.;Tsai, H. M.;Chiou, J. W.;張經霖;Chang, C. L.;彭維鋒;Pong, W. F.;Duran,P.;Moure, C.;Pena,O.
    贡献者: 淡江大學物理學系
    关键词: A. Manganites;C. XANES;D. Electronic structure;E. X-ray absorption spectroscopy
    日期: 2005-06-01
    上传时间: 2009-12-31 10:52:02 (UTC+8)
    出版者: Elsevier
    摘要: Electronic structures of orthorhombic perovskite-type manganites (OM) and hexagonal manganites (HM) are compared by using X-ray absorption near edge structure spectroscopy. This study reveals that the environments around Mn and O ions in both the systems are different. These are reflected primarily in the lifting of degeneracy of the Mn 3d orbitals. Interestingly, the unoccupied Mn 3dx2−y2 orbital in HM is strongly hybridized with O 2p states and appears to be responsible for both long range orderings: ferroelectric ordering at high temperatures and ferromagnetic ordering at low temperatures.
    關聯: Solid State Communications 134(12), pp.821-826
    DOI: 10.1016/j.ssc.2005.03.030
    显示于类别:[物理學系暨研究所] 期刊論文

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