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Electronic Structure and Magnetic Properties of Cobalt-Doped Nonstoichiometric Rutile Thin Films

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Abstract

The coherent potential method has been applied for the investigation of Co substitutional doping influence on the spectral and magnetic properties of TiO2 rutile (100) surface. Both stoichiometric and nonstoichiometric oxygen compositions have been considered. For the stoichiometric case, the energy spectrum corresponds to half-metallic ferromagnet. The Co ions are in 2 + formal oxidation state with a spin magnetic moment of 0.8 μB. The presence of oxygen vacancies makes the surface insulating and increases the Co spin magnetic moment value.

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Funding

This study was supported by Grant No. 16-12-10004 of the Russian Scientific Foundation.

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  1. M.N. Mikheev Institute of Metal Physics, Yekaterinburg, 620108, Russia

    N. A. Skorikov & M. A. Korotin

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  1. N. A. Skorikov
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  2. M. A. Korotin
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Correspondence to M. A. Korotin.

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Skorikov, N.A., Korotin, M.A. Electronic Structure and Magnetic Properties of Cobalt-Doped Nonstoichiometric Rutile Thin Films. J Supercond Nov Magn 32, 1371–1375 (2019). https://doi.org/10.1007/s10948-018-4843-0

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  • DOI: https://doi.org/10.1007/s10948-018-4843-0

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