Evolution of helimagnetic correlations in Mn1-xFexSi with doping

A small-angle neutron scattering study

Journal article (2018)

Authors

L.J. Bannenberg RST/Neutron and Positron Methods in Materials - AS
Robert M. Dalgliesh ISIS Neutron and Muon Source
T. Wolf Karlsruhe Institut für Technologie
F Weber Karlsruhe Institut für Technologie
C. Pappas RST/Neutron and Positron Methods in Materials - AS
Research Group
RST/Neutron and Positron Methods in Materials (AS) (TU Delft)
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Published Date

28-11-2018

Language

English

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Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Neutron and Positron Methods in Materials

Abstract

We present a comprehensive small-angle neutron scattering study of the doping dependence of the helimagnetic correlations in Mn1−xFexSi. The long-range helimagnetic order in Mn1−xFexSi is suppressed with increasing Fe content and disappears for x>x∗≈0.11, i.e., well before xC≈0.17 where the transition temperature vanishes. For x>x∗, only finite isotropic helimagnetic correlations persist which bear similarities with the magnetic correlations found in the precursor phase of MnSi. Magnetic fields gradually suppress and partly align these short-ranged helimagnetic correlations along their direction through a complex magnetization process