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Digitale Medien

XAFS study of copper species stabilized in the interlayer space of layered perovskite oxides (2001)

Kim, Dong Kuk ; Choi, Shin Hei ; Han, Yang Su ; [weitere]

Chester : International Union of Crystallography (IUCr)

Journal of synchrotron radiation 8 (2001), S. 734-736

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Details

ISSN: 1600-5775

Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Thema: Geologie und Paläontologie , Physik

Notizen: New intercalation compounds with Cu2+ ions in the interlayer of layered perovskite oxides, OA1-xCa2-xLaxNb3O10 (OA = n-octylammonium ion, 0 ≤ x 〈 1), have been prepared by ion-exchange reaction, and characterized by means of XRD and XAS. For the detail elucidation of the fine structure of the Cu K-edge XANES spectra, polarized XAS was applied for the [Cu(en)2]2+ and Cu2+ ions intercalated to the single crystal. According to the XANES and EXAFS spectra measured at Cu K-edge, copper ions are four-coordinated. In addition, XANES spectra have shown that the charge transfer from host layer to intercalated ions influences on the chemical state of copper ion.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1107/S0909049500014539

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