Electronic Structure and Magnetic Properties of Ga-Doped Heusler Alloy Co2FeSi

Abstract:

Article Preview

Using GGA+U (UCo =2.1eV, UFe=2.5eV) scheme based on the density functional theory (DFT), we investigate the electronic structure, magnetism and half-metallic stability of Ga-doped Heusler compound Co2FeSi. We find that the lattice constants and total magnetic moments in per unit respectively obey the Vegard’s rule and the Slater-Pauling rule well. The most stable half-metallicity occurs at doping concentration x=0.5 due to the Fermi level is situated slightly above the middle of the spin-down gap. Our studies also indicate that the RKKY-type exchange mechanism plays a dominating role in determining the magnetism of HMFs.

Info:

Periodical:

Edited by:

Han Zhao

Pages:

1430-1434

DOI:

10.4028/www.scientific.net/AMM.130-134.1430

Citation:

Y. Feng et al., "Electronic Structure and Magnetic Properties of Ga-Doped Heusler Alloy Co2FeSi", Applied Mechanics and Materials, Vols. 130-134, pp. 1430-1434, 2012

Online since:

October 2011

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.