Magnetic Properties of Co_2MnSi Compound with Tb Impurities

• Authors: R. Grasin , C. Rusu , E. Vinteler , R. Tetean
• Languages of publication: EN

Abstracts

EN

In this paper we report our experimental and theoretical studies on the effect of Tb impurity on the magnetic properties of the Heusler half metallic ferromagnet Co_2MnSi. The analysis of the band structures of the doped alloy shows that the half-metallic properties are completely conserved if Tb substitute Mn atoms, this effect being determined through the coupling between the R(4f) spin with the Mn(3d) itinerant electron spins. We evaluate the strength of such a coupling by calculating, in an ab initio fashion, the total energy of Co_{16}Mn_7TbSi_8 compound for a parallel and antiparallel f-d coupling. The experimental magnetic moments are in good agreement with the calculated ones in case of ferrimagnetic ordering.

Keywords

EN

72.80.Ga; 75.50.Cc; 71.15.Mb

Discipline

• 72.80.Ga: Transition-metal compounds
• 71.15.Mb: Density functional theory, local density approximation, gradient and other corrections
• 75.50.Cc: Other ferromagnetic metals and alloys

• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1128-1131

Dates

published

2012-05

Contributors

author

R. Grasin

• Babes-Bolyai University, Faculty of Physics, Kogalniceanu 1, RO-400084, Cluj Napoca, Romania

author

C. Rusu

• Babes-Bolyai University, Faculty of Physics, Kogalniceanu 1, RO-400084, Cluj Napoca, Romania

author

E. Vinteler

• Babes-Bolyai University, Faculty of Physics, Kogalniceanu 1, RO-400084, Cluj Napoca, Romania

author

R. Tetean

• Babes-Bolyai University, Faculty of Physics, Kogalniceanu 1, RO-400084, Cluj Napoca, Romania

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Identifiers

DOI

10.12693/APhysPolA.121.1128