Evolution of helimagnetic correlations in Mn${}_{1-x}$Fe${}_x$Si with doping: a small-angle neutron scattering study

Abstract

We present a comprehensive small angle neutron scattering study of the doping dependence of the helimagnetic correlations in Mn${}_{1-x}$Fe${}_x$Si. The long-range helimagnetic order in Mn${}_{1-x}$Fe${}_x$Si is suppressed with increasing Fe content and disappears for $x$ $>$ $x^{\ast }$ $\approx$ 0.11, i.e. well before $x_C$ $\approx$ 0.17 where the transition temperature vanishes. For $x$ $>$ $x^{\ast }$, 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.

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Cited by in corpus (13)

• Evolution of magneto-crystalline anisotropies in Mn${}_{1-x}$Fe${}_x$Si and Mn${}_{1-x}$Co${}_x$Si as inferred from small-angle neutron scattering and bulk properties
• Skyrmions and spirals in MnSi under hydrostatic pressure
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• Increasing the skyrmion stability in Cu${}_2$OSeO${}_3$ by chemical substitution
• Unpinning the skyrmion lattice in MnSi:Effect of substitutional disorder
• Pinning of Helimagnetic Phase Transitions in Zn-Substituted Skyrmion Host Cu${}_2$OSeO${}_3$
• Physical properties of (Mn 0.85 Fe 0.15) Si along the critical trajectory
• Robust metastable skyrmions with tunable size in the chiral magnet FePtMo${}_3$N
• Evolution of Helimagnetic Correlations when approaching the Quantum Critical Point of Mn${}_{1-x}$Fe${}_x$Si
• A combined inelastic neutron scattering and \textit{ab initio} lattice dynamics study of FeSi
• Physical properties of MnSi at extreme doping with Co: Quantum criticality
• Effect of chemical substitution on the skyrmion phase in Cu${}_2$OSeO${}_3$
• Zero-field 29Si nuclear magnetic resonance signature of helimagnons in MnSi