Electronic Structure and Optical Properties of Heusler Alloy Mn1.5Fe1.5Al.

Autor:	Shreder, E. I., Lukoyanov, A. V., Makhnev, A. A., Kuzmin, Yu. I., Dash, Shubhra, Patra, Ajit K., Vasundhara, M.
Předmět:	HEUSLER alloys OPTICAL properties ELECTRONIC structure OPTICAL measurements OPTICAL conductivity
Zdroj:	Journal of Experimental & Theoretical Physics; Oct2021, Vol. 133 Issue 4, p471-476, 6p
Abstrakt:	Theoretical calculations of the electronic structure and measurements of optical properties of the Heusler alloy Mn1.5Fe1.5Al have been performed. The density functional theory based optimized β-Mn-type crystal structure is reported for the first time for Mn1.5Fe1.5Al. An anomalous for metals behavior of the optical conductivity of the alloy in the infrared (IR) spectral region was found, i.e., the absence of the Drude rise and a high level of interband absorption. Such features of the optical spectrum indicate a complex structure of the band spectrum and a high density of states in the vicinity and at the Fermi level. The features on the optical conductivity curve are related to certain interband electron transitions. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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