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The Electronic Structure and Optical Properties of Heusler Alloys Mn2 – xFe1 + xAl (x = –0.5, 0, 0.5, 1)

  • ELECTRICAL AND MAGNETIC PROPERTIES
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Abstract

In this paper, we present the calculation results of the electronic structure and optical spectrum and an experimental study of the optical properties of Heusler alloys Mn2 – xFe1 + xAl (x = –0.5, 0, 0.5, 1). An anomalous for metallic systems behavior of the optical conductivity of alloys in the IR region of the spectrum was found: the absence of Drude growth and a high level of interband absorption. This behavior is shown to be determined by the features of the electronic structure: the Fermi level is located in the region of high density of states that is formed by the d states of Mn and Fe.

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Funding

The work was supported by the Russian Science Foundation, project no. 22-22-20109 (https://rscf.ru/project/22-22-20109/), IMP Ural Branch of the Russian Academy of Sciences). M. Vasundhara would like to acknowledge the support offered by Department of K&IM of Indian Institute of Chemical Technology (IICT/Pubs./ 2023/171). A. K. Patra acknowledges the support of SERB-DST, New Delhi, India (Grant no. CRG/2020/003590).

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Authors and Affiliations

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

    E. I. Shreder, A. V. Lukoyanov, R. D. Mukhachev & A. N. Filanovich

  2. Ural Federal University, 620002, Ekaterinburg, Russia

    A. V. Lukoyanov & A. N. Filanovich

  3. Central University of Rajasthan NH-8, 305817, Bandrasindri, Rajasthan, India

    Shubhra Dash & A. K. Patra

  4. MLR Institute of Technology, Dundigal, Hyderabad-500043, Telangana, India

    Shubhra Dash

  5. Polymers and Functional Materials Department, CSIR-Indian Institution of Chemical Technology, 500007, Tarnaka, Hyderabad, Telangana, India

    M. Vasundhara

Authors
  1. E. I. Shreder
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  2. A. V. Lukoyanov
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  3. R. D. Mukhachev
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  4. A. N. Filanovich
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  5. Shubhra Dash
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  6. A. K. Patra
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  7. M. Vasundhara
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Correspondence to E. I. Shreder.

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Translated by A. Ivanov

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Shreder, E.I., Lukoyanov, A.V., Mukhachev, R.D. et al. The Electronic Structure and Optical Properties of Heusler Alloys Mn2 – xFe1 + xAl (x = –0.5, 0, 0.5, 1). Phys. Metals Metallogr. 124, 245–251 (2023). https://doi.org/10.1134/S0031918X2370014X

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