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Optical Properties of Heusler Alloy Mn2FeAl with the β-Mn Structure

  • ELECTRICAL AND MAGNETIC PROPERTIES
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Abstract

The structure and optical properties of the Mn2FeAl Heusler alloy have been investigated. It is shown that the alloy crystallizes into a structure of the β-Mn type. The behavior of the optical conductivity of the alloy, which is anomalous for metallic systems (namely, the absence of a contribution from the intraband absorption and the presence of the intensive interband absorption), is observed in the IR spectral range. It is shown that this behavior is due to the following peculiarities of the electronic structure: the Fermi level is located in the region of a high density of states formed by the d states of Mn and Fe atoms.

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Funding

This study was performed within the framework of State assignment from the Ministry of Education and Science of Russia (theme Electron, no. AAAA-A18-118020190098-5) and supported by the Russian Foundation for Basic Research and the Department of Science and Technology New Delhi, India within research project no. 19-52-45008_Ind-a-INT/RUS/RFBR/379, as well as by the Government of the Russian Federation (resolution no. 211, contract no. 02.A03.21.0006). Structural studies were performed in X-Ray Analysis Department of Collaborative Access Center “Testing Center of Nanotechnology and Advanced Materials” of the Institute of Metal Physics, Ural Branch, Russian Academy of Sciences.

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Authors and Affiliations

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

    E. I. Shreder, A. A. Makhnev, A. V. Lukoyanov, L. A. Stashkova, Yu. I. Kuz’min, A. A. Semiannikova & V. V. Marchenkov

  2. Ural Federal University Named after the First President of Russia B.N. Yeltsin, 620002, Ekaterinburg, Russia

    A. V. Lukoyanov & V. V. Marchenkov

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  1. E. I. Shreder
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  2. A. A. Makhnev
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  3. A. V. Lukoyanov
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  4. L. A. Stashkova
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  5. Yu. I. Kuz’min
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  6. A. A. Semiannikova
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  7. V. V. Marchenkov
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Correspondence to E. I. Shreder.

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Translated by O. Kadkin

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Shreder, E.I., Makhnev, A.A., Lukoyanov, A.V. et al. Optical Properties of Heusler Alloy Mn2FeAl with the β-Mn Structure. Phys. Metals Metallogr. 122, 737–741 (2021). https://doi.org/10.1134/S0031918X21080147

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