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• W4200156785 abstract "The electronic structure and optical properties of the Heusler alloys Co 2 NiGa, Co 2 NiAl, Co 2 FeGa, and Co 2 FeAl are reported and compared in this work. In the Fe-based alloys, Co 2 FeGa and Co 2 FeAl, the electronic structure is found to have 100% spin polarization with the indirect energy gap in the [Formula: see text]-[Formula: see text] direction, whereas in Co 2 NiGa and Co 2 NiAl, the density of states is metallic in both spin projections with spin polarization of 55% (Co 2 NiGa) and 37% (Co 2 NiAl). Total and Co partial magnetic moments of all Heusler alloys for the optimized lattice parameters were found in a good agreement with previous calculations and experimental data. The frequency dependence of the real and imaginary parts of the complex dielectric constant for the Heusler alloys is studied in the spectrum region of 0.08–5 eV. The research results are discussed based on the performed calculations of the electronic structure. It was found that the character of variations of the spectral parameters of the alloys is typical for media with the metallic conductivity. In the IR region, the mechanism of the intraband acceleration of electrons by the light wave field dominates. The significant changes in the optical spectrum, magnetic moment, spin polarization and electronic structure were revealed in Co 2 MGa and Co 2 MAl for different M atoms which motivate further investigations of the Co-based Heusler alloys as promising materials for spintronics." @default.
• W4200156785 created "2021-12-31" @default.
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• W4200156785 date "2021-12-22" @default.
• W4200156785 modified "2023-10-03" @default.
• W4200156785 title "Comparative study of the electronic structure and optical properties of the Heusler alloys Co₂MGa and Co₂MAl (M = Fe and Ni)" @default.
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• W4200156785 doi "https://doi.org/10.1142/s0217984921505734" @default.
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