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  Structure, Magnetism, and Valence States of Cobalt and Platinum in Quasi-One-Dimensional Oxides A3CoPtO6 with A = Ca, Sr

Mikhailova, D., Kuo, C.-Y., Reichel, P., Tsirlin, A. A., Efimenko, A., Rotter, M., Schmidt, M., Hu, Z., Pi, T. W., Jang, L. Y., Soo, Y. L., Oswald, S., & Tjeng, L. H. (2014). Structure, Magnetism, and Valence States of Cobalt and Platinum in Quasi-One-Dimensional Oxides A3CoPtO6 with A = Ca, Sr. The Journal of Physical Chemistry C, 118(10), 5463-5469. doi:10.1021/jp411503s.

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資料種別: 学術論文

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 作成者:
Mikhailova, D.1, 著者           
Kuo, C.-Y.2, 著者           
Reichel, P.3, 著者           
Tsirlin, A. A.4, 著者           
Efimenko, A.3, 著者           
Rotter, M.5, 著者           
Schmidt, M.6, 著者           
Hu, Z.7, 著者           
Pi, T. W.8, 著者
Jang, L. Y.8, 著者
Soo, Y. L.8, 著者
Oswald, S.8, 著者
Tjeng, L. H.9, 著者           
所属:
1Daria Mikhailova, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863448              
2Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
3Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
4Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
5Martin Rotter, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863453              
6Marcus Schmidt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863415              
7Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              
8external, ou_persistent22              
9Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452              

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 要旨: Two quasi-one-dimensional oxides, Ca3CoPtO6 and Sr3CoPtO6, were synthesized and characterized. A combination of X-ray absorption spectroscopy at the Co-K-, Co-L2,3-, and Pt-L3-edges and X-ray photoelectron spectroscopy establishes unambiguously the divalent state of Co and the tetravalent state of Pt in both compounds, in contrast to the earlier assumption of the Co3+ and mixed Pt2+/Pt4+ valence states. Magnetization measurements reveal the paramagnetic behavior down to 2 K with strong evidence for an unquenched orbital moment of the high-spin Co2+. The simple paramagnetic behavior of A3CoPtO6 contrasts with the magnetic transitions observed in Ca3CoRhO6, Sr3CoIrO6, and other isostructural materials. This difference is ascribed to the nonmagnetic 5d6 state of Pt4+ that prevents magnetic couplings between the Co2+ ions.

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言語: eng - English
 日付: 2014-01-24
 出版の状態: 出版
 ページ: -
 出版情報: -
 目次: -
 査読: -
 識別子(DOI, ISBNなど): DOI: 10.1021/jp411503s
 学位: -

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出版物 1

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出版物名: The Journal of Physical Chemistry C
  その他 : J. Phys. Chem. C
種別: 学術雑誌
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出版社, 出版地: Washington DC : American Chemical Society
ページ: - 巻号: 118 (10) 通巻号: - 開始・終了ページ: 5463 - 5469 識別子(ISBN, ISSN, DOIなど): ISSN: 1932-7447
CoNE: https://pure.mpg.de/cone/journals/resource/954926947766