Microscopic Nature of the First-Order Field-Induced Phase Transition in the Strongly Anisotropic Ferrimagnet ${\mathrm{HoFe}}_{5}{\mathrm{Al}}_{7}$

Microscopic Nature of the First-Order Field-Induced Phase Transition in the Strongly Anisotropic Ferrimagnet ${HoFe}_{5} {Al}_{7}$

D. I. Gorbunov, C. Strohm, M. S. Henriques, P. van der Linden, B. Pedersen, N. V. Mushnikov, E. V. Rosenfeld, V. Petříček, O. Mathon, J. Wosnitza, and A. V. Andreev

Phys. Rev. Lett. 122, 127205 – Published 28 March 2019

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.

Received 8 September 2017
Revised 8 October 2018

DOI:https://doi.org/10.1103/PhysRevLett.122.127205

Physics Subject Headings (PhySH)

Ferrimagnetism Magnetic phase transitions

Ferrimagnets

Magnetization measurements Neutron diffraction X-ray magnetic circular dichroism

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

D. I. Gorbunov¹, C. Strohm², M. S. Henriques^3,4, P. van der Linden⁵, B. Pedersen⁶, N. V. Mushnikov⁷, E. V. Rosenfeld⁷, V. Petříček⁴, O. Mathon⁵, J. Wosnitza^1,8, and A. V. Andreev⁴

¹Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
²Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
³Institut Laue Langevin, 71 Avenue des Martyrs, F-38042 Grenoble, France
⁴Institute of Physics, Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic
⁵European Synchrotron Radiation Facility, B.P. 220, 38043 Grenoble, France
⁶Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstrasse 1, 85748 Garching, Germany
⁷Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Kovalevskaya 18, 620990 Ekaterinburg, Russia
⁸Institut für Festkörperphysik, TU Dresden, D-01062 Dresden, Germany

Simultaneous Observation of the Er- and Fe-Sublattice Magnetization of Ferrimagnetic ${Er}_{3} {Fe}_{5} O_{12}$ in High Magnetic Fields Using X-Ray Magnetic Circular Dichroism at the Er $L_{2, 3}$ Edges

C. Strohm, P. van der Linden, O. Mathon, and S. Pascarelli

Phys. Rev. Lett. 122, 127204 (2019)

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Vol. 122, Iss. 12 — 29 March 2019

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Physical Review Letters

Microscopic Nature of the First-Order Field-Induced Phase Transition in the Strongly Anisotropic Ferrimagnet ${HoFe}_{5} {Al}_{7}$

D. I. Gorbunov, C. Strohm, M. S. Henriques, P. van der Linden, B. Pedersen, N. V. Mushnikov, E. V. Rosenfeld, V. Petříček, O. Mathon, J. Wosnitza, and A. V. Andreev

Phys. Rev. Lett. 122, 127205 – Published 28 March 2019

Abstract

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Simultaneous Observation of the Er- and Fe-Sublattice Magnetization of Ferrimagnetic ${Er}_{3} {Fe}_{5} O_{12}$ in High Magnetic Fields Using X-Ray Magnetic Circular Dichroism at the Er $L_{2, 3}$ Edges

C. Strohm, P. van der Linden, O. Mathon, and S. Pascarelli

Phys. Rev. Lett. 122, 127204 (2019)

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Physical Review Letters

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

D. I. Gorbunov, C. Strohm, M. S. Henriques, P. van der Linden, B. Pedersen, N. V. Mushnikov, E. V. Rosenfeld, V. Petříček, O. Mathon, J. Wosnitza, and A. V. Andreev

Phys. Rev. Lett. 122, 127205 – Published 28 March 2019

Abstract

Physics Subject Headings (PhySH)

Authors & Affiliations

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Simultaneous Observation of the Er- and Fe-Sublattice Magnetization of Ferrimagnetic Er3Fe5O12 in High Magnetic Fields Using X-Ray Magnetic Circular Dichroism at the Er L2,3 Edges

C. Strohm, P. van der Linden, O. Mathon, and S. Pascarelli

Phys. Rev. Lett. 122, 127204 (2019)

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Microscopic Nature of the First-Order Field-Induced Phase Transition in the Strongly Anisotropic Ferrimagnet ${HoFe}_{5} {Al}_{7}$

Simultaneous Observation of the Er- and Fe-Sublattice Magnetization of Ferrimagnetic ${Er}_{3} {Fe}_{5} O_{12}$ in High Magnetic Fields Using X-Ray Magnetic Circular Dichroism at the Er $L_{2, 3}$ Edges