Characterization of a Disordered Above Room Temperature Skyrmion Material Co8Zn8Mn4
arXiv:2010.11174 · doi:10.3390/ma14164689
Abstract
Topologically non trivial spin textures host great promise for future spintronic applications. Skyrmions in particular are of burgeoning interest owing to their nanometric size, topological protection, and high mobility via ultra-low current densities. It has been previously reported through magnetic susceptibility, microscopy, and scattering techniques that CoZnMn forms an above room temperature triangular skyrmion lattice. Here we report the synthesis procedure and characterization of a polycrystalline CoZnMn bulk sample. We employ powder x-ray diffraction, backscatter Laue diffraction, and neutron diffraction as characterization tools of the crystallinity of the samples, while magnetic susceptibility and Small Angle Neutron Scattering (SANS) measurements are performed to study the skyrmion phase. Magnetic susceptibility measurements show a dip anomaly in the magnetization curves which persists over a range of approximately 305 K- 315 K. SANS measurements reveal a rotationally disordered polydomain skymrion lattice. Applying a recently developed symmetry-breaking magnetic field sequence, we were able to orient and order the previously jammed state to yield the prototypical hexagonal diffraction patterns, with secondary diffraction rings.
arXiv comment7 pages, 8 figures
References in corpus (26)
- Skyrmion Lattice in a Chiral Magnet
- Spontaneous Skyrmion Ground States in Magnetic Metals
- Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
- Topological Hall effect in the A-phase of MnSi
- Spin Transfer Torques in MnSi at Ultra-low Current Densities
- Emergent electrodynamics of skyrmions in a chiral magnet
- Current-induced skyrmion dynamics in constricted geometries
- Magnetic skyrmion logic gates: conversion, duplication and merging of skyrmions
- Skyrmion Lattice in a Doped Semiconductor
- A new class of chiral materials hosting magnetic skyrmions beyond room temperature
- Planck 2013 results. XXV. Searches for cosmic strings and other topological defects
- Precursor phenomena at the magnetic ordering of the cubic helimagnet FeGe
- Skyrmions with varying size and helicity in composition-spread helimagnetic alloys
- Method for finding mechanism and activation energy of magnetic transitions, applied to skyrmion and antivortex annihilation
- Creation and detection of skyrmions in a Bose-Einstein condensate
- Multiferroicity and skyrmions carrying electric polarization in GaV4S8
- Electric-field control of the skyrmion lattice in Cu2OSeO3
- Long-range crystalline nature of the skyrmion lattice in MnSi
- Real-Space Berry Phases - Skyrmion Soccer
- Dynamics and energetics of emergent magnetic monopoles in chiral magnets
- Metastable skyrmion lattices governed by magnetic disorder and anisotropy in -Mn-type chiral magnets
- Deciphering structural and magnetic disorder in the chiral skyrmion host materials CoZnMn ()
- Generation and detection of spin-orbit coupled neutron beams
- Spin-Orbit States of Neutron Wavepackets
- Precipitating Ordered Skyrmion Lattices from Helical Spaghetti
- Sub-micrometer resolution neutron tomography