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

E. I. Shreder; Шредер Е. И.; A. V. Lukoyanov; Лукоянов А. В.; R. D. Mukhachev; Мухачев Р. Д.; A. N. Filanovich; Филанович А. Н.; Shubra Dash; Даш Шубра; A. K. Patra; Патра Аджит К.; M. Vasundhara; Васундхара М.

doi:10.31857/S001532302260201X

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

Authors: Shreder E.I.¹, Lukoyanov A.V.¹^,2, Mukhachev R.D.¹, Filanovich A.N.¹^,3, Dash S.⁴, Patra A.K.⁵, Vasundhara M.⁶
Affiliations:
1. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
2. Ural Federal University
3. Ural Federal University, Ekaterinburg
4. Central University of Rajasthan NH-8ж MLR Institute of Technology
5. Central University of Rajasthan NH-8
6. Polymers and Functional Materials Department, CSIR-Indian Institution of Chemical Technology
Issue: Vol 124, No 3 (2023)
Pages: 257-263
Section: ЭЛЕКТРИЧЕСКИЕ И МАГНИТНЫЕ СВОЙСТВА
URL: https://rjmseer.com/0015-3230/article/view/662751
DOI: https://doi.org/10.31857/S001532302260201X
EDN: https://elibrary.ru/CNPMQN
ID: 662751

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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.

Keywords

Heusler alloys, electronic structure, optical properties

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