English  |  正體中文  |  简体中文  |  Items with full text/Total items : 62796/95837 (66%)
Visitors : 3639322      Online Users : 424
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/50353


    Title: Effect of Co, Ni, and Cu substitution on the electronic structure of hexagonal YMnO3 studied by x-ray absorption spectroscopy
    Authors: Asokan, K.;Chen, Y. S.;Pao, C. W.;Tsai, H. M.;Lee, C. W. O.;Lin, C. H.;Hsueh, H. C.;Ling, D. C.;Pong, W. F.;Chiou, J. W.;Tsai, M.-H.;Peña, O.;Moure, C.
    Contributors: 淡江大學物理學系
    Keywords: density functional theory;doping profiles;manganese compounds;XANES;yttrium compounds
    Date: 2009-09
    Issue Date: 2010-08-09 15:47:54 (UTC+8)
    Publisher: College Park: American Institute of Physics (AIP)
    Abstract: X-ray absorption spectroscopy measurements have been performed to elucidate local electronic and atomic structures of orthorhombic 3d-transition metal-doped yttrium manganites (YMnO3) with chemical formulae YMn2/3Me1/3O3 (Me = Co, Ni, and Cu). The Mn L3- and K-edges x-ray absorption near-edge structure (XANES) demonstrate the direct substitution of Me2+ for Mn3+, so that the positive effective charge of Mn ions are increased. Me-doping is also found to induce substantial broadening of the Mn L3-edge feature, which suggests enhancement of the delocalization of Mn 3d eg subbands and conductivity. Local spin density approximation (LSDA)+U (Hubbard U parameter) calculations were used to understand their electronic structures.
    Relation: Applied Physics Letters 95(13), pp.131901(3 pages)
    DOI: 10.1063/1.3224905
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

    Files in This Item:

    File Description SizeFormat
    0003-6951_95(13)p131901.pdf538KbAdobe PDF617View/Open
    index.html期刊資訊0KbHTML427View/Open
    index.html館藏資訊0KbHTML236View/Open
    index.html0KbHTML287View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback