Crystal Structures of Superconducting LnBaAeCu3Oy (Ln$=$La, Nd; Ae$=$Ca, Sr)
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概要
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Crystal structures of LaBaCaCu3Oy, NdBaCaCu3Oy and LaBaSrCu3Oy were analyzed by the X-ray Rietveld method. Their chemical formulae were different from the nominal compositions owing to the formation of impurities. They were obtained as La1.23Ba1.23Ca0.54Cu3Oy, Nd1.26Ba1.26Ca0.48Cu3Oy and La1.14Ba1.14Sr0.72Cu3Oy, respectively. Ca2+ or Sr2+ ions were found to enter not only the Ba2+ sites but the La3+ or Nd3+ sites as well. The occupancy of Ca2+ or Sr2+ at La3+ or Nd3+ sites was found to correlate with their ionic radii.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 1989-05-20
著者
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Shamoto Shin-ichi
Institute For Molecular Science
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Fujishita Hideshi
Department Of Physics College Of Liberal Arts Kanazawa University
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Sato Masatoshi
Institute For Advanced Materials Processing Tohoku University
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Onoda Masashige
Institute For Molecular Science Okazaki National Research Institutes
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Shamoto Shin-ichi
Institute for Molecular Science, Myodaiji, Okazaki 444
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