English  |  正體中文  |  简体中文  |  Items with full text/Total items : 70548/70548 (100%)
Visitors : 23156358      Online Users : 367
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU 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: http://ir.lib.ncu.edu.tw/handle/987654321/39120

    Title: Crystal structure and magnetic ordering of Pr in (Pb0.5Cu0.5)(2)(Ba0.5Sr0.5)(2)PrCu2O8
    Authors: Lin,YC;Chuang,WY;Li,WH;Lee,KC;Lynn,JW;Yang,CL;Ku,HC
    Contributors: 物理研究所
    Date: 1997
    Issue Date: 2010-07-08 14:05:33 (UTC+8)
    Publisher: 中央大學
    Abstract: The crystal structure of polycrystalline PbBaSrPrCu3O8 was studied using high resolution neutron diffraction. Rietveld refinement of the diffraction pattern shows that the compound crystallizes into the Tl2Ba2YCu2O8 2212-type structure. The Pb and Cu atoms in the two (Pb,Cu)O layers are randomly mixed to form two (Pb0.5Cu0.5)O layers, and the Pa and Sr atoms are also randomly mixed to form two (Ba0.5Sr0.5)O layers, resulting in (Pb0.5Cu0.5)(2)(Ba0.5Sr0.5)(2)PrCu2O8. The magnetic ordering of the Pr ions was also studied using magnetic neutron diffraction and ac susceptibility measurements. At low temperatures, magnetic peaks presumably originating from the Pr spin ordering were observed at the {1/2 1/2 1/2 1/2}, {1/2 1/2 3/2}, and {1/2 1/2 5/2} positions. The Pr spins order at T-N approximate to 9 K with the moment direction along the c axis and the nearest-neighbor spins coupled antiferromagnetically. A cusp associated with the antiferromagnetic ordering at T-N is also clearly observed in ac susceptibility measurements. (C) 1997 American Institute of Physics.
    Appears in Collections:[物理研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat

    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明