The Electronic Structure and Optical Properties of Heusler Alloys Mn2 – xFe1 + xAl (x =

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

Published:2023-03-01 Issue:3 Volume:124 Page:257-263
ISSN:0015-3230
Container-title:Физика металлов и металловедение
language:
Short-container-title:Fizika metallov i metallovedenie

Author:

Shreder E. I.¹,Lukoyanov A. V.¹²,Mukhachev R. D.¹,Filanovich A. N.¹³,Dash Shubra⁴,Patra A. K.⁵,Vasundhara M.⁶

Affiliation:

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

Abstract

In this paper, we present the calculation results of the electronic structure and optical spectrumand 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 spectrumwas found: the absence of Drude growth and a high level of interband absorption. This behavior is shownto be determined by the features of the electronic structure: the Fermi level is located in the region of highdensity of states that is formed by the d states of Mn and Fe.

Publisher

The Russian Academy of Sciences

Reference17 articles.

1. Dash Sh., Lukoyanov A.V., Nancy, Mishra D., Mohammed Rasi U.P., Gangineni R.B., Vasundhara M., Patra A.K. Structural stability and magnetic properties of Mn2FeAl alloy with a β-Mn structure // JMMM. 2020. V. 513. P. 167205.

2. Khorwal A.K., Nancy, Dash Sh., Kumar A., Lukoyanov A.V., Shreder E.I., Bitla Yu., Vasundhara M., Patra A.K. Evidence for canonical spin glass behaviour in polycrystalline Mn1.5Fe1.5Al Heusler alloy // JMMM. 2022. V. 546. P. 168 752.

3. Марченков В.В., Ирхин В.Ю., Перевозчикова Ю.А., Терентьев П.Б., Семянникова А.А., Марченкова Е.Б., Eisterer M. Кинетические свойства и полуметаллический магнетизм в сплавах Гейслера Mn2YAl // ЖЭТФ. 2019. Т. 155. Вып. 6. С. 1083–1090.

4. Wollmann L., Chadov S., Kübler J., Felser C. Magnetism in cubic manganese-rich Heusler compounds // Phys. Rev. B. 2014. V. 90. P. 214420.

5. Yang Z.J., Gao Q.H., Xiong H.N., Shao J.X., Wang X.W., Xu Z.J. Pressure-induced magnetic moment abnormal increase in Mn2FeAl and non-continuing decrease in Fe2MnAl via first principles // Sci. Rep. 2017. V. 7. P. 16 522.