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Induced half-metallicity in Cr-based ferromagnetic chalcospinels with anion substitutions: CuCr2S(Se)4-xEx (E=F, Cl, Br), Cu(Cd)Cr2S(Se)4-x, and CdCr2S(Se)4-xDx (D=N, P, As)
- Source :
- Applied Physics Letters; 2/9/2009, Vol. 94 Issue 6, pN.PAG, 3p, 1 Chart, 3 Graphs
- Publication Year :
- 2009
-
Abstract
- First-principles calculations of the electronic structures of chalcogenide spinels with anion vacancy and substitutions are presented. Our calculations predict that Cu(Cd)Cr<subscript>2</subscript>S(Se)<subscript>4-x</subscript>, CuCr<subscript>2</subscript>S(Se)<subscript>4-x</subscript>E<subscript>x</subscript> (E=F, Cl, Br), and CdCr<subscript>2</subscript>S(Se)<subscript>4-x</subscript>D<subscript>x</subscript> (D=N, P, As) can be half-metallic over a range of concentrations. The magnetic moment is found to scale approximately linearly on adding or withdrawing electrons and varies between 5.0 and 6.0 μ<subscript>B</subscript>/f.u. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 94
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 36609463
- Full Text :
- https://doi.org/10.1063/1.3080210