English  |  正體中文  |  简体中文  |  Items with full text/Total items : 62570/95226 (66%)
Visitors : 2507326      Online Users : 240
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/987654321/4414

    Title: Ion substitution effects on the structure stability of cuprate superconductors
    Authors: 錢凡之;Chien, F. Z.
    Contributors: 淡江大學物理學系
    Keywords: superconductivity;lattice parameters;perovskite;tolerance factor
    Date: 2000-11
    Issue Date: 2009-03-19 13:16:55 (UTC+8)
    Publisher: 淡江大學
    Abstract: We have demonstrated that using a transition metal ion to partially substitute Cu ion of the YSr2Cu3Oy can stabilize its crystal structure and retain superconductivity. The superconducting transition temperature in YSr2(Cu1-xMx)3Oy, where M is transition metal ion, ranges from 40K to 80K depending on the specific M ion. Lattice contraction due to Sr substitution makes the Ba/Sr ion to move closer to CuO plane, and consequently leads to a charge transfer between oxygen. Our study shows that the key factor controlling the structural stability in Y-Sr-Cu-O system is the effective ionic radius Sr in lattice. The introduction of transition metal doping is to increase the effective ionic radius of Sr through the increase of oxygen content.
    Relation: Tamkang journal of science and engineering 3(3), pp.139-144
    DOI: 10.6180/jase.2000.3.3.03
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

    Files in This Item:

    File Description SizeFormat
    1560-6686_3(3)p139-144.pdf162KbAdobe PDF115View/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