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In the Rietveld refinement, the deviation of (008) and (108) peaks is very large relative to that of other reflections with increase of Na contant x. And same behavior showed by the change of ttemperature. Electron density distribution based on synchrotron radiation X-ray diffraction data showed the direct observation of the formation of the Co-O hybridization with increasing the Na content. This means increase of covalency between O 2p and $Co t_{2g}$ in the $CoO_{2}$ layer. But not showed the change of electron density distribution between 100K and 300K. 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Crystal structure, electric and magnetic properties in Nax$CoO_{2}$
http://hdl.handle.net/10131/5057
http://hdl.handle.net/10131/505770043994-2ae2-40e1-94f2-0229d73ce666
名前 / ファイル | ライセンス | アクション |
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ICAM-2003 proceeding.pdf (353.9 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-12-14 | |||||
タイトル | ||||||
タイトル | Crystal structure, electric and magnetic properties in Nax$CoO_{2}$ | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Nagasawa, K.
× Nagasawa, K.× Nakatsugawa, Hiroshi |
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著者(ヨミ) | ||||||
識別子Scheme | WEKO | |||||
識別子 | 17410 | |||||
姓名 | ナカツガワ, ヒロシ | |||||
著者別名 | ||||||
識別子Scheme | WEKO | |||||
識別子 | 17411 | |||||
姓名 | 中津川, 博 | |||||
著者所属 | ||||||
Division of Materials Science and Engineering, Graduate School of Engineering, Yokohama National University | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The electron density distributions of $γ-Na_{x}CoO_{2}$ have been obtained by the maximum entropy method and the Rietveld analysis using synchrotron radiation X-ray diffracton data at 100K, 200K and 300K . In the Rietveld refinement, the deviation of (008) and (108) peaks is very large relative to that of other reflections with increase of Na contant x. And same behavior showed by the change of ttemperature. Electron density distribution based on synchrotron radiation X-ray diffraction data showed the direct observation of the formation of the Co-O hybridization with increasing the Na content. This means increase of covalency between O 2p and $Co t_{2g}$ in the $CoO_{2}$ layer. But not showed the change of electron density distribution between 100K and 300K. These facts indicate the essential difference for respective cause of the peak deviation.Key words:$γ-Na_{x}CoO_{2}$, Synchrotron radiation X-ray diffraction, Maximum Entropy Method. | |||||
書誌情報 |
Proceedings of the 22nd International Conference on Thermoelectrics (ICT2003) 17-21 August p. 223-226, 発行日 2003 |
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ISBN | ||||||
識別子タイプ | ISBN | |||||
関連識別子 | 078038301X | |||||
書誌レコードID | ||||||
識別子タイプ | NCID | |||||
関連識別子 | BA67127748 | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
出版者 | IEEE Service Center, c2003 |