Fe valence state at the surface of the Fe0.5Cu0.5Cr2S4 spinel

Taubitz Christian; Hu Zhiwei; Hollmann Nils; Chin Yi-Ying; Kuepper Karsten; Tsurkan Vladimir; Lin Hongji; Chen Chiente; Tjeng Liu Hao; Neumann Manfred

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Articolul precedent

Articolul urmator

106

SM ISO690:2012

TAUBITZ, Christian, HU, Zhiwei, HOLLMANN, Nils, CHIN, Yi-Ying, KUEPPER, Karsten, TSURKAN, Vladimir, LIN, Hongji, CHEN, Chiente, TJENG, Liu Hao, NEUMANN, Manfred. Fe valence state at the surface of the Fe0.5Cu0.5Cr2S4 spinel. In: Journal of Physics D: Applied Physics, 2010, vol. 4, pp. 338-339. ISSN 0022-3727. DOI: https://doi.org/10.1002/pssr.201004302

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Journal of Physics D: Applied Physics

Volumul 4 / 2010 / ISSN 0022-3727 /ISSNe 1361-6463

Fe valence state at the surface of the Fe_0.5Cu_0.5Cr₂S₄ spinel

DOI:https://doi.org/10.1002/pssr.201004302

Pag. 338-339

Taubitz Christian¹, Hu Zhiwei², Hollmann Nils³, Chin Yi-Ying², Kuepper Karsten⁴, Tsurkan Vladimir⁵, Lin Hongji⁶, Chen Chiente⁶, Tjeng Liu Hao⁷, Neumann Manfred⁸

¹ Universitatea din Osnabrück,
² Max-Planck Institute for Chemistry,
³ University of Cologne,
⁴ Universitatea din Ulm, LMU München,
⁵ Institute of Applied Physics, Academy of Sciences of Moldova,
⁶ National Synchrotron Radiation Research Center, Hsinchu ,
⁷ Max Planck Institute for Chemical Physics of Solids,
⁸ Universitaet Osnabrueck

Disponibil în IBN: 14 septembrie 2023

Rezumat

Here we present X-ray absorption measurements of a vacuum cleaved Fe_0.5Cu_0.5Cr₂S₄ single crystal. Measurements at different positions on the cleaved sample surface clearly reveal a difference between the valence state of the Fe ions in the sur- face layers and the valency of the Fe ions present in the bulk. These results confirm the findings of recent measurements outlined previously.

Cuvinte-cheie
Chromium, Electronic properties, electronic structure, Iron compounds, single crystals, X ray absorption, X rays