Chiral Soliton Lattice in Chiral Magnetic Crystal CrNb<sub>3</sub>S<sub>6</sub>

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Author(s)

    • Togawa Y.
    • Nanoscience and Nanotechnology Research Center, Osaka Prefecture University
    • Koyama T.
    • Department of Materials Science, School of Engineering, Osaka Prefecture University
    • Mori S.
    • Department of Materials Science, School of Engineering, Osaka Prefecture University
    • Kousaka Y.
    • Department of Physics and Mathematics, College of Science and Engineering, Aoyama Gakuin University
    • Akimitsu J.
    • Department of Physics and Mathematics, College of Science and Engineering, Aoyama Gakuin University
    • Nishihara S.
    • Department of Chemistry, Graduate School of Science, Hiroshima University
    • Inoue K.
    • Department of Chemistry, Graduate School of Science, Hiroshima University
    • Kishine J.
    • Division of Natural and Environmental Sciences, The Open University of Japan

Abstract

We microscopically investigate chiral magnetic orders in the absence and presence of magnetic field in a chiral magnetic crystal CrNb<sub>3</sub>S<sub>6</sub> by means of low-temperature Lorenz transmission electron microscopy and small-angle electron scattering method. Based on detailed analyses in both real and reciprocal space, we directly observe that chiral soliton lattice (CSL) emerges in small magnetic fields applied perpendicular to the chiral crystallographic axis. CSL develops from chiral helimagnetic structure (CHM) with increasing the spatial period from 48 nm toward sample size in rising magnetic fields. Chiral magnetic orders of CSL and CHM do not exhibit any structural dislocation, indicating their high stability and robustness. This is because chiral magnetic orders are macroscopically induced by monoaxial Dzyaloshinkii-Moriya exchange interaction that is allowed in hexagonal CrNb<sub>3</sub>S<sub>6</sub> crystals belonging to noncentrosymmetric chiral space group. Present observations of periodic, nonlinear, tunable, and robust CSL will be the first step to explore fascinating functions of CSL for magnetic and spintronic device applications using chiral magnets.

Journal

  • Journal of the Japan Society of Powder and Powder Metallurgy

    Journal of the Japan Society of Powder and Powder Metallurgy 61(S1), S34-S36, 2014

    Japan Society of Powder and Powder Metallurgy

Codes

  • NII Article ID (NAID)
    130004482707
  • Text Lang
    ENG
  • ISSN
    0532-8799
  • Data Source
    J-STAGE 
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