Energy Spectrum and Optical Absorption of Mn100-xAlx (x=20, 30) Compounds with the β-Mn Structure

This paper presents electronic spectrum calculations and a study of the optical properties of the binary compounds Mn70Al30 and Mn80Al20 with the beta-Mn structure. The energy dependences of the calculated density of states, with high values at the Fermi level, are determined by broad bands formed by manganese 3d states. The calculated electronic structures are used to analyze measured optical conductivity spectra of the alloys in the quantum light absorption range. From their optical properties in the infrared spectral region, we evaluate a number of characteristics of conduction electrons.

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This paper presents electronic spectrum calculations and a study of the optical properties of binary compounds Mn70Al30 and Mn80Al20. The high values of the calculated density of states at the Fermi level are determined by broad bands formed by manganese 3d states. The measured optical conductivity spectra of the alloys are analyzed using the calculated electronic structures, and various characteristics of conduction electrons are evaluated based on their optical properties in the infrared spectral region.