English  |  正體中文  |  简体中文  |  Items with full text/Total items : 58323/91877 (63%)
Visitors : 14381332      Online Users : 120
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: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25276


    Title: Superconductivity, hole concentration and peritectic transition of La1.5CaxBa1.5−xCu3Oy compounds
    Other Titles: La1.5CaxBa1.5-xCu3Oy化合物的超導性,電洞濃度與色晶轉變
    Authors: Huang, W. N.;Wang, C. M.;Kao, H.-C. I.
    Contributors: 淡江大學化學學系
    Keywords: Experimental study;Superconductivity;Carrier density;Holes;Peritectic transformation;Chemical composition;Transition temperature;Lanthanum oxides;Calcium oxides;Barium oxides;Copper oxides;Multi-element compounds;High-Tc superconductors;Stoichiometry;Inorganic compounds;Transition element compounds;Rare earth compounds
    Date: 1997-08
    Issue Date: 2013-07-09 15:26:16 (UTC+8)
    Publisher: Amsterdam: Elsevier BV * North-Holland
    Abstract: A series of single phase La1.5CaxBa1.5−xCu3Oy(0≤x≤0.50) compounds with tetragonal triple-perovskite structure is prepared. They have an incongruent melting point at 1107±1 °C which is not dependent on the amount of Ca substitution. Oxygen stoichiometry and hole concentration of these materials increase with increasing x. Thermal stability of the oxygen atom in the La1.5CaxBa1.5−xCu3Oy series is independent on the oxygen stoichiometry. For x≥ 0.25, Tc increases rapidly from 33 K to 73 K with increasing x. Tc of La1.5CaxBa1.5−xCu3Oy (CB) is always lower than that of La1.5−xCaxBa1.5Cu3Oy (LC) for a given x, suggesting that an increase in the mole fraction of the trivalent cation in these compounds would decrease its Tc.
    Relation: Physica C: Superconductivity and its Applications 282-287(2), pp.767-768
    DOI: 10.1016/S0921-4534(97)00401-2
    Appears in Collections:[Graduate Institute & Department of Chemistry] Journal Article

    Files in This Item:

    File SizeFormat
    index.html0KbHTML206View/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