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Magnetic Moments, Electronic Structure, and Optical Spectroscopy of Cobalt-Based Intermetallic Compounds YCo3, Y2Co7, and LaCo5

  • ORDER, DISORDER, AND PHASE TRANSITION IN CONDENSED SYSTEM
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Abstract

We report on the results of analysis of magnetic properties and electronic structure, which were obtained by self-consistent ab initio spin-polarized calculations, as well as experimentally determined optical properties of cobalt-based intermetallic compounds YCo3, Y2Co7, and LaCo5. Optical characteristics were measured using ellipsometry in a wide spectral interval. The mechanism of quantum absorption of light in these materials is considered based on comparative analysis of experimental and theoretical spectra of interband optical conduction. Analysis of the crystalline structure and the resultant magnetic, electronic, and optical characteristics revealed peculiarities in the variation of physical properties. which appeared upon an increase in the cobalt content in the intermetallides.

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Funding

The investigations described in Section 3 were supported by the Russian Foundation for Basic Research (project nos. 20-02-00234 and 19-52-18008). The results of investigations described in Section 4 were obtained under State assignment from the Ministry of Science and Higher Education of the Russian Federation (project “Electron,” no. AAAA-A18-118020190098-5). The samples (Section 2) were prepared under the support of the Russian Science Foundation (project no. 19-72-00048).

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Authors and Affiliations

  1. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108, Yekaterinburg, Russia

    A. V. Lukoyanov, Yu. V. Knyazev & Yu. I. Kuz’min

  2. Ural Federal University, 620002, Yekaterinburg, Russia

    A. V. Lukoyanov, D. S. Neznakhin & M. I. Bartashevich

Authors
  1. A. V. Lukoyanov
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  2. Yu. V. Knyazev
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  3. Yu. I. Kuz’min
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  4. D. S. Neznakhin
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  5. M. I. Bartashevich
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Correspondence to A. V. Lukoyanov.

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Translated by N. Wadhwa

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Lukoyanov, A.V., Knyazev, Y.V., Kuz’min, Y.I. et al. Magnetic Moments, Electronic Structure, and Optical Spectroscopy of Cobalt-Based Intermetallic Compounds YCo3, Y2Co7, and LaCo5 . J. Exp. Theor. Phys. 131, 600–606 (2020). https://doi.org/10.1134/S1063776120080026

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  • DOI: https://doi.org/10.1134/S1063776120080026

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