Electronic and magnetic properties of NiMn1-xHoxSb compounds

Autor(en): Grasin, Robert
Rusu, Calin
Laslo, Ancuta
Dudric, Roxana
Mican, Sever
Neumann, Manfred
Tetean, Romulus
Stichwörter: 1ST-PRINCIPLES; CRO2; density functional theory; electronic structure calculations; HALF-METALLIC FERROMAGNETS; Heusler alloys; magnetic properties; NIMNSB; Physics; Physics, Condensed Matter; XPS
Erscheinungsdatum: 2012
Herausgeber: WILEY-V C H VERLAG GMBH
Journal: PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
Volumen: 249
Ausgabe: 9
Startseite: 1779
Seitenende: 1783
Zusammenfassung: 
We study the effects of holmium doping in the half-Heusler compound NiMnSb. Band structure calculations show that the half-metallic properties are completely conserved if holmium atoms substitute the manganese ones. The antiparallel coupling of Ho and transition metal magnetic moments was found to be more favorable. The magnetization measurements are in agreement with the results of the structural and XPS analysis and confirm that the holmium atoms occupy lattice sites. There is a very good agreement between the experimental magnetic moments determined at 4.2?K and the calculated ones in the case of antiferromagnetic coupling between the Ho and transition metal magnetic moments.
ISSN: 03701972
DOI: 10.1002/pssb.201147553

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