Probing the random distribution of half-metallic Co2Mn1-xFexSi Heusler alloys

S. Wurmehl; J.T. Kohlhepp; H.J.M. Swagten; B. Koopmans; M. Wójcik; B. Balke; C.G.F. Blum; V. Ksenofontov; G.H. Fecher; C. Felser

doi:10.1063/1.2760158

Probing the random distribution of half-metallic Co2Mn1-xFexSi Heusler alloys

S. Wurmehl, J.T. Kohlhepp, H.J.M. Swagten, B. Koopmans, M. Wójcik, B. Balke, C.G.F. Blum, V. Ksenofontov, G.H. Fecher, C. Felser

Physics of Nanostructures

Research output: Contribution to journal › Article › Academic › peer-review

32 Citations (Scopus)

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Abstract

Co2Mn1-xFexSi Heusler alloys crystallize in the L21 structure. This structure type requires random distribution of Mn and Fe in case of the mixed alloys. The spin echo nuclear magnetic resonance (NMR) technique probes the direct local environments of the active atoms and is thus able to resolve next neighboring shells providing a unique tool to verify the random distribution of Mn and Fe in Co2Mn1-xFexSi. Exemplarily, the half-metallic quaternary Heusler alloy Co2Mn0.5Fe0.5Si was investigated by means of NMR. The 55Mn NMR measurements unambiguously demonstrate the random distribution of Mn and Fe on the 4b Wyckoff position in Co2Mn0.5Fe0.5Si.

Original language	English
Article number	052506
Pages (from-to)	052506-1/3
Number of pages	3
Journal	Applied Physics Letters
Volume	91
Issue number	5
DOIs	https://doi.org/10.1063/1.2760158
Publication status	Published - 2007

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title = "Probing the random distribution of half-metallic Co2Mn1-xFexSi Heusler alloys",

abstract = "Co2Mn1-xFexSi Heusler alloys crystallize in the L21 structure. This structure type requires random distribution of Mn and Fe in case of the mixed alloys. The spin echo nuclear magnetic resonance (NMR) technique probes the direct local environments of the active atoms and is thus able to resolve next neighboring shells providing a unique tool to verify the random distribution of Mn and Fe in Co2Mn1-xFexSi. Exemplarily, the half-metallic quaternary Heusler alloy Co2Mn0.5Fe0.5Si was investigated by means of NMR. The 55Mn NMR measurements unambiguously demonstrate the random distribution of Mn and Fe on the 4b Wyckoff position in Co2Mn0.5Fe0.5Si.",

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Probing the random distribution of half-metallic Co2Mn1-xFexSi Heusler alloys. / Wurmehl, S.; Kohlhepp, J.T.; Swagten, H.J.M.; Koopmans, B.; Wójcik, M.; Balke, B.; Blum, C.G.F.; Ksenofontov, V.; Fecher, G.H.; Felser, C.

In: Applied Physics Letters, Vol. 91, No. 5, 052506, 2007, p. 052506-1/3.

Research output: Contribution to journal › Article › Academic › peer-review

TY - JOUR

T1 - Probing the random distribution of half-metallic Co2Mn1-xFexSi Heusler alloys

AU - Wurmehl, S.

AU - Kohlhepp, J.T.

AU - Swagten, H.J.M.

AU - Koopmans, B.

AU - Wójcik, M.

AU - Balke, B.

AU - Blum, C.G.F.

AU - Ksenofontov, V.

AU - Fecher, G.H.

AU - Felser, C.

PY - 2007

Y1 - 2007

N2 - Co2Mn1-xFexSi Heusler alloys crystallize in the L21 structure. This structure type requires random distribution of Mn and Fe in case of the mixed alloys. The spin echo nuclear magnetic resonance (NMR) technique probes the direct local environments of the active atoms and is thus able to resolve next neighboring shells providing a unique tool to verify the random distribution of Mn and Fe in Co2Mn1-xFexSi. Exemplarily, the half-metallic quaternary Heusler alloy Co2Mn0.5Fe0.5Si was investigated by means of NMR. The 55Mn NMR measurements unambiguously demonstrate the random distribution of Mn and Fe on the 4b Wyckoff position in Co2Mn0.5Fe0.5Si.

AB - Co2Mn1-xFexSi Heusler alloys crystallize in the L21 structure. This structure type requires random distribution of Mn and Fe in case of the mixed alloys. The spin echo nuclear magnetic resonance (NMR) technique probes the direct local environments of the active atoms and is thus able to resolve next neighboring shells providing a unique tool to verify the random distribution of Mn and Fe in Co2Mn1-xFexSi. Exemplarily, the half-metallic quaternary Heusler alloy Co2Mn0.5Fe0.5Si was investigated by means of NMR. The 55Mn NMR measurements unambiguously demonstrate the random distribution of Mn and Fe on the 4b Wyckoff position in Co2Mn0.5Fe0.5Si.

U2 - 10.1063/1.2760158

DO - 10.1063/1.2760158

M3 - Article

VL - 91

SP - 052506-1/3

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 5

M1 - 052506

ER -