LnBa<sub>2</sub>Cu<sub>2</sub>MO<sub><i>y</i></sub> (Ln=La, Pr: M=Ta, Nb) の合成とその結晶構造
書誌事項
- タイトル別名
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- Syntheses and Characterization of LnBa<sub>2</sub>Cu<sub>2</sub>MO<sub><i>y</i></sub> (Ln=La, Pr and M=Ta, Nb)
- LnBa2Cu2MOy Ln La Pr M Ta Nb ノ ゴウセイ ト ソ
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抄録
Four non-superconducting oxides, i.e. LaBa2Cu2TaO8, LaBa2Cu2NbO8, PrBa2Cu2TaO8 and PrBa2Cu2NbO8, were synthesized. Their crystallographic structures were determined by means of the Rietveld analysis using X-ray powder diffraction data. In these compounds, Ta and Nb ions were found to preferentially occupy the Cu 1 site between the two Ba layers in the LaBa2Cu3O7-type structure. The absence of superconductivity in these materials was discussed in terms of the bond valence sum of each cation in the crystal and a possibility to exhibit superconductivity by modifying these materials was suggested.
収録刊行物
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- Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌)
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Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌) 97 (1130), 1065-1070, 1989
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390001205276886656
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- NII論文ID
- 110002292165
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- NII書誌ID
- AN10040326
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- ISSN
- 18821022
- 09145400
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- NDL書誌ID
- 3258942
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- データソース種別
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- JaLC
- NDL
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- 使用不可