Microscopic Nature of the First-Order Field-Induced Phase Transition in the Strongly Anisotropic Ferrimagnet HoFe5Al7

Research output: Contribution to journal › Research article › Contributed › peer-review

Contributors

  • D. I. Gorbunov - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • C. Strohm - , German Electron Synchrotron (DESY) (Author)
  • M. S. Henriques - , ILL - Institut Laue-Langevin, Czech Academy of Sciences (Author)
  • P. Van Der Linden - , European Synchrotron Radiation Facility (Author)
  • B. Pedersen - , Technical University of Munich (Author)
  • N. V. Mushnikov - , RAS - Mikheev Institute of Metal Physics, Ural Branch (Author)
  • E. V. Rosenfeld - , RAS - Mikheev Institute of Metal Physics, Ural Branch (Author)
  • V. Petříček - , Czech Academy of Sciences (Author)
  • O. Mathon - , European Synchrotron Radiation Facility (Author)
  • J. Wosnitza - , Chair of Physics of High Magnetic Fields, Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • A. V. Andreev - , Czech Academy of Sciences (Author)

Abstract

We report on x-ray magnetic circular dichroism experiments in pulsed fields up to 30 T to follow the rotations of individual magnetic moments through the field-induced phase transition in the ferrimagnet HoFe5Al7. Near the ground state, we observe simultaneous stepwise rotations of the Ho and Fe moments and explain them using a two-sublattice model for an anisotropic ferrimagnet with weak intersublattice exchange interactions. Near the compensation point, we find two phase transitions. The additional magnetization jump reflects the fact that the Ho moment is no longer rigid as the applied field acts against the intersublattice exchange field.

Details

Original languageEnglish
Article number127205
JournalPhysical review letters
Volume122
Issue number12
Publication statusPublished - 28 Mar 2019
Peer-reviewedYes

External IDs

PubMed 30978077

Keywords

ASJC Scopus subject areas