Effects of random distribution of Mn, Fe in Co2Mn1-xFexSi Heusler compounds 
probed by55Mn nuclear magnetic resonance

Wurmehl, Sabine; Kohlhepp, Jürgen T.; Swagten, Henk J. M.; Koopmans, Bert; Wójcik, Marek; Balke, Benjamin; Blum, Christian G. F.; Ksenofontov, Vadim; Fecher, Gerhard H.; Felser, Claudia

doi:10.1063/1.2831359

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Effects of random distribution of Mn, Fe in Co₂Mn_1-xFe_xSi Heusler compounds probed by ⁵⁵Mn nuclear magnetic resonance

MPS-Authors

There are no MPG-Authors in the publication available

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Wurmehl, S., Kohlhepp, J. T., Swagten, H. J. M., Koopmans, B., Wójcik, M., Balke, B., et al. (2008). Effects of random distribution of Mn, Fe in Co₂Mn_1-xFe_xSi Heusler compounds probed by ⁵⁵Mn nuclear magnetic resonance. Journal of Applied Physics, 103(7): 07D706, pp. 1-3. doi:10.1063/1.2831359.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0018-8A1A-2

Abstract

Recent spin echo nuclear magnetic resonance (NMR) revealed that the half-metallic Co(2)Mn(1-x)Fe(x)Si Heusler alloys exhibit the L2(1) structure with random distribution of Mn and Fe on the 4b Wyckoff position. This random distribution is most prominent in the third coordination shell of the (55)Mn nuclei, as this shell is the first magnetically active shell, leading to a line splitting in the (55)Mn NMR spectra. A comparison, as presented in this paper, of all (55)Mn NMR satellite lines shows that the resonance frequencies corresponding to the same number of Fe atoms in the third shell of (55)Mn shift to slightly different resonance frequencies with increasing overall Fe content x. This shift is related to the constructive contribution of higher shells to the hyperfine field. These higher shells affect also the satellite linewidth, leading to a parabolic behavior with increasing Fe concentration x. This parabolic behavior is modified by the frequency spacing related to the replacement of Mn by Fe. (C) 2008 American Institute of Physics.