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    Title: Rietveld analysis and superconductivity of La3-xCa2xBa3-xCu6Oy compounds
    Other Titles: La3-xCa2xBa3-xCu6Oy化合物的Rietveld分析與超導性
    Authors: 高惠春;Kao, H. C. I.;Leu, Y. D.;Huang, W. N.;王啟銘;Wang, C. M.
    Contributors: 淡江大學化學學系
    Date: 1996-10-01
    Issue Date: 2009-12-01
    Publisher: Institute of Physics (IOP)
    Abstract: A series of single-phase 0953-2048/9/10/011/img9 0953-2048/9/10/011/img10 compounds with tetragonal triple-perovskite structure is studied by Rietveld analysis. For 0953-2048/9/10/011/img11, all of the 0953-2048/9/10/011/img12 ions enter the centre site: the 0953-2048/9/10/011/img13 site of the tetragonal 0953-2048/9/10/011/img14 phase. For 0953-2048/9/10/011/img15, a maximum of about 1/2 of the 0953-2048/9/10/011/img13 sites are occupied by 0953-2048/9/10/011/img12 ions and the extra 0953-2048/9/10/011/img12 ions enter the 0953-2048/9/10/011/img19 site. Double plateaux are found between 0953-2048/9/10/011/img20 and 0953-2048/9/10/011/img21 (the difference between the occupancy factor of 0953-2048/9/10/011/img12 ions at the 0953-2048/9/10/011/img13 site and that of 0953-2048/9/10/011/img24 ions at the 0953-2048/9/10/011/img19 site). It is suggested that 0953-2048/9/10/011/img20 of the La - Ca - Ba - Cu - O compounds containing 50 mol% copper atoms with tetragonal triple-perovskite structure can be predicted from the correlation of 0953-2048/9/10/011/img20 versus 0953-2048/9/10/011/img21.
    Relation: Superconductor Science and Technology 9(10), pp.893-897
    DOI: 10.1088/0953-2048/9/10/011
    Appears in Collections:[化學工程與材料工程學系暨研究所] 期刊論文
    [化學學系暨研究所] 期刊論文

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