English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 60868/93650 (65%)
造訪人次 : 1147803      線上人數 : 22
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/27507

    題名: Electronic structure of the Fe-Cu-Nb-Si-B alloys by x-ray absorption spectroscopy
    作者: Cheng, Y. H.;Jan, J. C.;Chiou, J. W.;彭維鋒;Pong, W. F.;Tsai, M. H.;Hseih, H. H.;Chang, Y. K.;Dann, T. E.;錢凡之;Chien, F. Z.;鄭伯昆;Tseng, P. K.;Leu, M. S.;Chin, T. S.
    貢獻者: 淡江大學物理學系
    日期: 2000-07-03
    上傳時間: 2009-12-31 10:13:19 (UTC+8)
    出版者: Melville: College Park: American Institute of Physics (AIP)
    摘要: We measured x-ray absorption near-edge-structure (XANES) spectra of nanocrystalline- (nc-) and amorphous- (a-) Fe73.5Cu1Nb3Si13.5B9 (nc-FCNSB and a-FCNSB) and Fe78Si13B9 (a-FeSiB) alloys at the Fe L3,2 edge using the sample drain current mode and at the Cu L3,2, and Nb L3 edge and Si K edge using the fluorescence mode. The features in the Fe L3-edge XANES spectrum of nc-FCNSB changed shape significantly with the addition of Cu and Nb to the Fe–Si–B alloy under the optimum annealing conditions, indicating that Cu and Nb strongly influence the Fe 3d local electronic structure. Closely examining the Cu L3,2-edge XANES spectrum of nc-FCNSB reveals that the Cu clusters essentially have a body-centered-cubic structure. The white-line features at the Nb L3 edge suggest a slight increase in delocalization of Nb 4d orbits when a-FCNSB is crystallized into nc-FCNSB. The Si K-edge XANES spectrum demonstrates the dominance of Fe–Si bonds around the Si atom in nc-FCNSB. © 2000 American Institute of Physics.
    關聯: Applied Physics Letters 77(1), pp.115-117
    DOI: 10.1063/1.126895
    顯示於類別:[物理學系暨研究所] 期刊論文


    檔案 描述 大小格式瀏覽次數
    0003-6951_77(1)p115-117.pdf66KbAdobe PDF768檢視/開啟



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