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Springer Verlag, Journal of Superconductivity and Novel Magnetism, 3(28), p. 995-997

DOI: 10.1007/s10948-014-2704-z

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Local Electronic and Crystal Structure of Magnetic RCo2As2 (R = La, Ce, Pr, Eu)

Journal article published in 2014 by A. P. Menushenkov, A. A. Yaroslavtsev, A. Y. Geondzhian, R. V. Chernikov, Y. V. Zubavichus, X. Tan ORCID, M. Shatruk
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This paper is available in a repository.

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Abstract

The experimental X-ray absorption data on the recently prepared magnetic arsenides RCo2As2 (R = rare earth) are provided. The oxidation state of rare-earth ions is explored by means of the X-ray absorption near edge structure (XANES) spectroscopy. Ce and Eu exhibit the intermediate valence state. The rare-earth valence instability sensitive to external perturbations opens the way for the influencing the magnetic state of RCo2As2 compounds.