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  1. 数理物質系 (Faculty of Pure and Applied Sciences)
  2. 守友 浩 (Moritomo Yutaka)
  1. コンテンツタイプ (Contents Type)
  2. 雑誌発表論文等 (Journal article, etc.)
  3. P~
  4. Physical review B

Phase separation driven by mobile cations in (Na1−xKx)0.35Co[Fe(CN)6]0.74⋅zH2O

http://hdl.handle.net/2241/104361
c7f60130-96ef-42bd-ad61-6c61e91f423c
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PRB_80-13.pdf PRB_80-13.pdf (481.9 kB)
item type Journal Article(1)
公開日 2010-01-14
タイトル
タイトル Phase separation driven by mobile cations in (Na1−xKx)0.35Co[Fe(CN)6]0.74⋅zH2O
言語
言語 eng
資源タイプ
タイプ journal article
著者 Abe, Y.

× Abe, Y.

WEKO 67218

Abe, Y.

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Kim, J. E.

× Kim, J. E.

WEKO 67219

Kim, J. E.

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Matsuda, T.

× Matsuda, T.

WEKO 67220

Matsuda, T.

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Shibata, T.

× Shibata, T.

WEKO 67221

Shibata, T.

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Tanida, H.

× Tanida, H.

WEKO 67222

Tanida, H.

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Uruga, T.

× Uruga, T.

WEKO 67223

Uruga, T.

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Moritomo, Y.

× Moritomo, Y.

WEKO 67224

Moritomo, Y.

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著者別名 守友, 浩

× 守友, 浩

WEKO 166
e-Rad 00283466
筑波大学研究者総覧 0000000531

守友, 浩

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抄録
内容記述 Cation substitution effects on structural and optical properties are investigated for films of Prussian-blue-type cyanides, (Na1−xKx)0.35Co[Fe(CN)6]0.74zH2O(0.07≤x≤0.85). Substitution of K+ for Na+ induces a phase transition from high-spin (HS) phase with the electronic configuration of Co2+(t2g5eg2)-Fe3+(t2g5) to low-spin (LS) phase with the electronic configuration of Co3+(t2g6)-Fe2+(t2g6). At around room temperature, the HS phase (LS phase) is observed in the region of x≤0.2(x≥0.8) while two phases coexist in the intermediate-x region (0.2≤x≤0.8). We interpreted the two-phase region in terms of intrinsic phase separation into small-x (Na+-rich) and large-x (K+-rich) regions because the cations can migrate within the crystal to minimize the total free energy. We further confirmed that absorption spectra in the infrared, visible and Co/Fe K edge regions are quantitatively reproduced by the phase-separation model.
書誌情報 Physical review B

巻 80, 号 13, p. 134101, 発行日 2009-10
ISSN
収録物識別子 1098-0121
書誌レコードID
収録物識別子 AA11187113
DOI
関連識別子
関連識別子 10.1103/PhysRevB.80.134101
権利
権利情報 © 2009 The American Physical Society
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値 publisher
出版者
出版者 American Physical Society
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