Structural disorder versus chiral magnetism in Cr${}_{1/3}$NbS${}_2$

Abstract

The crystal structure of a disordered form of Cr${}_{1/3}$NbS${}_2$ has been characterized using diffraction and inelastic scattering of synchrotron radiation. In contrast to the previously reported symmetry (P6${}_3$22), the crystal can be described by a regular twinning of an average P6${}_3$ structure with three disordered positions of the Cr ions. Short-range correlations of the occupational disorder result in a quite intense and structured diffuse scattering; a static nature of the disorder was unambiguously attributed by the inelastic x-ray scattering. The diffuse scattering has been modeled using a reverse Monte-Carlo algorithm assuming a disorder of the Cr sub-lattice only. The observed correlated disorder of the Cr sub-lattice reduces the temperature of the magnetic ordering from 130 K to 88 K and drastically modifies the field dependence of the magnetization as it is evidenced by the SQUID magnetometery. We conclude, that in contrast to the helicoidal spin structure assumed for P6${}_3$22 form, the compound under study is ferromagnetically ordered with a pronounced in-plane anisotropy.

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Cited by in corpus (14)

• Finite-Temperature Properties of Three-Dimensional Classical Chiral Helimagnets
• Tricritical point and phase diagram based on critical scaling in monoaxial chiral helimagnet Cr1/3NbS2
• Canted antiferromagnetic order in the monoaxial chiral magnets V${}_{1/3}$TaS${}_2$ and V${}_{1/3}$NbS${}_2$
• The nature of ferromagnetism in the chiral helimagnet $C{r}_{1/3}Nb{S}_2$
• Giant topological and planar Hall effect in Cr${}_{1/3}$NbS${}_2$
• A spin dynamics approach to solitonics
• Extended exchange interactions stabilize long-period magnetic structures in Cr${}_{1/3}$NbS${}_2$
• Theory of magnetoelastic resonance in a mono-axial chiral helimagnet
• Comparative Electronic Structures of the Chiral Helimagnets Cr1/3NbS2 and Cr1/3TaS2
• An emergence of chiral helimagnetism or ferromagnetism governed by Cr intercalation in a dichalcogenide CrNb${}_3$S${}_6$
• Consequences and control of multi-scale (dis)order in chiral magnetic textures
• Numerical hardware-efficient variational quantum simulation of a soliton solution
• Thermal fluctuations in the conical state of monoaxial helimagnets
• Disentangling Electronic, Lattice and Spin Dynamics in the Chiral Helimagnet Cr1/3NbS2