Half-Metallic Magnetism of Quaternary Heusler Compounds CoFeMnSi( x =0,0.5, and 1.0): First-Principles Calculations.

Autor:	Abderrahim, Bennadji, Ameri, Mohammed, Bensaid, Djillali, Azaz, Yahia, Doumi, Bendouma, Al-Douri, Yaroub, Benzoudji, Fethi
Předmět:	MAGNETIC properties FERROMAGNETIC materials ELECTRONIC band structure HEUSLER alloys DENSITY of states
Zdroj:	Journal of Superconductivity & Novel Magnetism; Feb2016, Vol. 29 Issue 2, p277-283, 7p
Abstrakt:	Using first-principles calculations, the structural, electronic, and magnetic properties of ferromagnetic half-metallic full-Heusler CoFeSi, CoMnSi and Co Fe Mn Si alloy via the full-potential linearized augmented plane-wave (FP-LAPW) method in the generalized gradient (GGA) and GGA + U approximations are compared with other experimental and theoretical results. The electronic band structures and density of states (DOS) of the compounds indicate they are half metallic because of the existence of the energy gap in the minority spin (DOS and band structure), which yields perfect spin polarization. The half metallicity of the obtained material may prove useful for applications in spin-polarizers and spin-injectors of magnetic nanodevices. The calculated total spin magnetic moments are almost exactly that expected from the Slater-Pauling rule. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
Externí odkaz:	Zobrazit plný text záznamu Full text from SpringerLink