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The valence state of Co ions in $[(ca_{1-x}Y_x)_{2}CoO_{3}]_{0.62}CoO_{2}(0 leqq x leqq 0.04)$ has been clarified as $Co^{3.2+}$ in $CoO_{2}$ sheet and $Co^{3.6+}$ in RS-type BL, respectively. In addition,both a broad minimum at around 100K $(T_{SDW}^{on})$ and a broad maximum between $T_{SS}^{end}$ and $T_{SS}^{on}$ in the ρ(T) curve correspond to two magnetic transitions,where $T_{SS}^{end}$ and $T_{SS}^{on}$ could correspond to the spin-state transition of Co ions in the $CoO_{2}$ sheet and in the RS-type BL, respectively. Furthermore,in x= 0.02 and 0.04 samples,the seebeck coeddicient at 800K, show the highest value (S = 176μ V/K) .Therefore, Y doped $Ca_{3}Co_{4}O_{9}$ are potential candidates for the practical use of thermoelectric power generations.", "subitem_description_type": "Abstract"}]}, "item_2_full_name_2": {"attribute_name": "著者(ヨミ)", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "17425", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "ナカツガワ, ヒロシ"}]}]}, "item_2_full_name_3": {"attribute_name": "著者別名", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "17426", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "中津川, 博"}]}]}, "item_2_publisher_35": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "IEEE"}]}, "item_2_relation_13": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type": "isVersionOf", "subitem_relation_type_id": {"subitem_relation_type_id_text": "info:doi/10.1109/ICT.2007.4569404", "subitem_relation_type_select": "DOI"}}]}, "item_2_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "10942734 ", "subitem_source_identifier_type": "ISSN"}]}, "item_2_text_4": {"attribute_name": "著者所属", "attribute_value_mlt": [{"subitem_text_value": "Yokohama National University"}]}, "item_2_version_type_18": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_version_resource": "http://purl.org/coar/version/c_ab4af688f83e57aa", "subitem_version_type": "AM"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Nakatsugawa, Hiroshi"}], "nameIdentifiers": [{"nameIdentifier": "17422", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Jeong, H. 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Thermoelectric properties and crystal structures in Y doped $Ca_{3}Co_{4}O_{9}$
http://hdl.handle.net/10131/5060
http://hdl.handle.net/10131/50604613bc3d-2f18-4d00-ba77-ea0f15398ab8
名前 / ファイル | ライセンス | アクション |
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ICT2007-Nakatsugawa.pdf (471.1 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 | Thermoelectric properties and crystal structures in Y doped $Ca_{3}Co_{4}O_{9}$ | |||||
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 |
Nakatsugawa, Hiroshi
× Nakatsugawa, Hiroshi× Jeong, H. M.× Nagasawa, K. |
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著者(ヨミ) | ||||||
識別子Scheme | WEKO | |||||
識別子 | 17425 | |||||
姓名 | ナカツガワ, ヒロシ | |||||
著者別名 | ||||||
識別子Scheme | WEKO | |||||
識別子 | 17426 | |||||
姓名 | 中津川, 博 | |||||
著者所属 | ||||||
Yokohama National University | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We have prepared polysrystalline specimens of Y doped $Ca_{3}Co_{4}O_{9}$ using a conventional solid-state reaction method, and investgated the Y substitution effect on the thermoelectric and magnetic properities. The valence state of Co ions in $[(ca_{1-x}Y_x)_{2}CoO_{3}]_{0.62}CoO_{2}(0 leqq x leqq 0.04)$ has been clarified as $Co^{3.2+}$ in $CoO_{2}$ sheet and $Co^{3.6+}$ in RS-type BL, respectively. In addition,both a broad minimum at around 100K $(T_{SDW}^{on})$ and a broad maximum between $T_{SS}^{end}$ and $T_{SS}^{on}$ in the ρ(T) curve correspond to two magnetic transitions,where $T_{SS}^{end}$ and $T_{SS}^{on}$ could correspond to the spin-state transition of Co ions in the $CoO_{2}$ sheet and in the RS-type BL, respectively. Furthermore,in x= 0.02 and 0.04 samples,the seebeck coeddicient at 800K, show the highest value (S = 176μ V/K) .Therefore, Y doped $Ca_{3}Co_{4}O_{9}$ are potential candidates for the practical use of thermoelectric power generations. | |||||
書誌情報 |
Proceedings of the 26th International Conference on Thermoelectrics (ICT2007) 3-7 June 発行日 2007-06 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 10942734 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1109/ICT.2007.4569404 | |||||
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 | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
出版者 | ||||||
出版者 | IEEE |