The effect of field cooling on a spin-chiral domain structure in a magnetoelectric helimagnet Ba0.5Sr1.5Zn2Fe12O22

Y. Hiraoka, Y. Tanaka, M. Oura, Yusuke Wakabayashi, T. Kimura

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Spin-chiral domain structures near a cleaved crystal face of a magnetoelectric helimagnet, Ba0.5Sr1.5Zn2Fe12O22, were examined after various magnetic and electric field-cooling procedures by means of the scanning resonant X-ray microdiffraction technique using circularly polarized X-rays. We have found that the application of a magnetic field (1-2 k Oe) during the field-cooling procedure stabilizes one of the handedness among the two spin-chiral states (left- or right-handed screw structure) and makes nearly a single spin-chiral domain in the vicinity of the cleaved crystal face. However, it makes the degree of the spin chirality spatially inhomogeneous even within a domain. We discuss the observed field-cooling effect in terms of possible formation of spin-chiral domains with "stripe-type" domain walls accompanied by randomly-distributed ferromagnetic islands.

Original languageEnglish
Pages (from-to)160-165
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume384
DOIs
Publication statusPublished - 2015 Jun 15
Externally publishedYes

Keywords

  • Field-cooling effect
  • Helimagnet
  • Resonant X-ray diffraction
  • Spin-chiral domain
  • Y-type hexaferrite

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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