Field-induced magnetic structures in antiferroquadrupolar ordering compound DyB2C2

Kenji Ohoyama, Kentaro Indoh, Hiroki Yamauchi, Aya Tobo, Eiichi Matsuoka, Masugu Sato, Susumu Katano, Hideya Onodera

Research output: Contribution to journalArticlepeer-review

Abstract

Neutron scattering experiments were performed on the single-crystalline DyB2C2 under magnetic fields in order to elucidate the magnetic structures of field-induced phases. The measurements in the a*-c* reciprocal lattice plane under the magnetic fields along the [010] direction resulted in finding a new magnetic reflection of 1 0 3/4 in a field-induced phase (phase II″) in addition to the magnetic reflections that are common to those in the phase under a zero magnetic field (phase III). The magnetic unit cell in phase II″ has dimensions of axax4c, where all the Dy magnetic moments on the AFQ structure have advantageous directions to the magnetic field, and their AFQ couplings with the neighbouring moments along the c-axis are partly broken. This magnetic structure model for phase II″ well explains the magnetisation process at 5K up to 14 T.

Original languageEnglish
Article number114703
Journaljournal of the physical society of japan
Volume77
Issue number11
DOIs
Publication statusPublished - 2008 Nov

Keywords

  • Antiferromagnetic order
  • Antiferroquadrupolar order
  • DyBC
  • Magnetic structure
  • Neutron diffraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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