淡江大學機構典藏:Item 987654321/24943
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    題名: Effect of Ca2+ and La3+ in Y1-xCaxBa2-xLaxCu3Oy study : an X-ray absorption spectroscopy
    作者: Hsieh, C. H.;Chang, C. N.;Lee, S. B.;高惠春;Kao, H. C. I.;Chin, C. H.
    貢獻者: 淡江大學化學學系
    日期: 2003-02
    上傳時間: 2009-12-01
    出版者: 台北：中華民國物理學會
    摘要: ray absorption near-edge spectroscopy (XANES). The oxygen content y in these samples remained about the same for all x. Both the O-1s and Cu-2p3/2 XANES results indicate that the total number of holes remained essentially unchanged. The O-1s XANES gives no sign showing that there are La ions on the Y sites. Our data indicated that the Ca2+ and La3+ doping changed not only the lattice symmetry but also the electronic structure at the Fermi energy in the valence band. The results derived from the O-1s XANES showed that the holes on the CuO2 planes decreased, while the holes on the O(1) and O(5) sites en the basal plane increased, as the doping concentration x increased.
    關聯: Chinese Journal of Physics 41(1), pp.59-69
    顯示於類別:[化學學系暨研究所] 期刊論文

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