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Pressure-Induced Tunable Magnetism and Half-Metallic Stability in Co2FeGa Heusler Alloy

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Abstract:

Using the first-principles calculations within the density functional theory (DFT), we have investigated the structure, magnetism and half-metallic stability of Co2FeGa Heusler compound under pressure from 0 to 50GPa. The results revel that the lattice constant is gradually shrank and total magnetic moment in per unit slightly decreased with increasing pressure, respectively. Moreover, with the increase of the pressure, the Fermi level will move towards high-energy orientation. When the pressure reaches at 30GPa the most stable half-metallicity is observed which the Fermi level is located at the middle of the spin-minority gap.

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Applied Mechanics and Materials II View Preview

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Periodical:

Applied Mechanics and Materials (Volumes 477-478)

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1303-1306

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.477-478.1303

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Online since:

December 2013

Authors:

Qin Xiang Gao*

Keywords:

Half-Metallicity, Magnetism, Pressure

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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