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Microscopic Nature of the First-Order Field-Induced Phase Transition in the Strongly Anisotropic Ferrimagnet HoFe_{5}Al_{7}.
Gorbunov, D I; Strohm, C; Henriques, M S; van der Linden, P; Pedersen, B; Mushnikov, N V; Rosenfeld, E V; Petrícek, V; Mathon, O; Wosnitza, J; Andreev, A V.
Afiliación
  • Gorbunov DI; Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany.
  • Strohm C; Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany.
  • Henriques MS; Institut Laue Langevin, 71 Avenue des Martyrs, F-38042 Grenoble, France.
  • van der Linden P; Institute of Physics, Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic.
  • Pedersen B; European Synchrotron Radiation Facility, B.P. 220, 38043 Grenoble, France.
  • Mushnikov NV; Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstrasse 1, 85748 Garching, Germany.
  • Rosenfeld EV; Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Kovalevskaya 18, 620990 Ekaterinburg, Russia.
  • Petrícek V; Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Kovalevskaya 18, 620990 Ekaterinburg, Russia.
  • Mathon O; Institute of Physics, Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic.
  • Wosnitza J; European Synchrotron Radiation Facility, B.P. 220, 38043 Grenoble, France.
  • Andreev AV; Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany.
Phys Rev Lett ; 122(12): 127205, 2019 Mar 29.
Article en En | MEDLINE | ID: mdl-30978077
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 HoFe_{5}Al_{7}. 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.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2019 Tipo del documento: Article País de afiliación: Alemania
Texto completo
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2019 Tipo del documento: Article País de afiliación: Alemania