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Search for half-metallic ferrimagnetism in V-based Heusler alloys Mn$_2$VZ (Z$=$Al, Ga, In, Si, Ge, Sn) | | K Ozdogan
; I Galanakis
; E Sasioglu
; B Aktas
; | | Date: |
15 Dec 2005 | | Journal: | J. Phys.: Condens. Matter 18, 2905-2914 (2006) | | Subject: | Materials Science | | Abstract: | Using a state-of-the-art full-potential electronic structure method within the local spin density approximation, we study the electronic and magnetic structure of Mn$_2$V-based full Heusler alloys: Mn$_2$VZ (Z=Al, Ga, In, Si, Ge, and Sn). We show that small expansion of the calculated theoretical equilibrium lattice constants restores the half-metallic ferrimagnetism in these compounds. Moreover a small degree of disorder between the V and Z atoms, although iduces some states within the gap, it preserves the Slater-Pauling behaviour of the spin magnetic moments and the alloys keep a high degree of spin-polarisation at the Fermi level opening the way for a half-metallic compensated ferrimagnet. | | Source: | arXiv, cond-mat/0512361 | | Services: | Forum | Review | PDF | Favorites | |
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