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Ferromagnetism and the metal-insulator transition in the thiospinel Cu(Ir1-xCrx)2S4
http://hdl.handle.net/10258/246
http://hdl.handle.net/10258/2461f3f38b4-ff8d-4c9d-8d67-e91e4c6c91aa
名前 / ファイル | ライセンス | アクション |
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PR-B_68_115106.pdf (150.6 kB)
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Item type | 学術雑誌論文 / Journal Article.(1) | |||||
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公開日 | 2007-09-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Ferromagnetism and the metal-insulator transition in the thiospinel Cu(Ir1-xCrx)2S4 | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | charge-ordered-states | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | chromium compounds | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | copper compounds | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | curie temperature | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | ferromagnetic materials | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | iridium compounds | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | magnetic structure | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | metal-insulator transition | |||||
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 | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
著者 |
ENDO, Ryo
× ENDO, Ryo× 阿波加, 淳司× 永田, 正一 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A thiospinel CuIr2S4 exhibits a temperature-induced metal-insulator (M-I) transition at 230 K with a simultaneous spin-dimerization and charge-ordering transition although a three-dimensional system. On the other hand, CuCr2S4 has the same spinel structure without any structural transformations. CuCr2S4 remains metallic and is ferromagnetic with the Curie temperature TC≃377 K. In order to see the effect of substituting Cr for Ir on the M-I transition, we have carried out a systematic experimental study of electrical and magnetic properties of Cu(Ir1-xCrx)2S4 system. The M-I transition temperature decreases steeply with increasing Cr-composition x and this transition is not detected above x≃0.05. The value of TC decreases with decreasing x from 1.0, then TC disappears below x≃0.20. The ferromagnetic state suggests the non-collinear spin alignment. In the intermediate composition range over x=0.08 to 0.20, the B-site undergoes a local crystal distortion around 180 K, where the energy level t2g splits into lower symmetry. Then the low-spin state within the t2g subspace is realized for Cr3+ ion with s=1/2. The magnetic state of Cr3+ ion indicates a crossover from high temperature s=3/2 to low temperature s=1/2 state around 180 K. | |||||
言語 | en | |||||
書誌情報 |
en : Physical review. Third series. B, Condensed matter and materials physics 巻 68, 号 11, p. 115106-1-115106-9, 発行日 2003-09-15 |
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出版者 | ||||||
言語 | en | |||||
出版者 | The American Physical Society | |||||
出版者版へのリンク | ||||||
10.1103/PhysRevB.68.115106 | ||||||
https://doi.org/10.1103/PhysRevB.68.115106 | ||||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1103/PhysRevB.68.115106 | |||||
論文ID(NAID) | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | NAID | |||||
関連識別子 | 120000802053 | |||||
日本十進分類法 | ||||||
主題Scheme | NDC | |||||
主題 | 428.4 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 10980121 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11187113 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | © 2003 The American Physical Society | |||||
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 | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf |