Drastic reduction of the R-Fe exchange in interstitially modified (Nd,Ho)2Fe14B compounds probed by megagauss magnetic fields

N. V. Kostyuchenko, I. S. Tereshina, E. A. Tereshina-Chitrova, L. A. Ivanov, M. Paukov, D. I. Gorbunov, A. V. Andreev, M. Doerr, G. A. Politova, A. K. Zvezdin, S. V. Veselova, A. P. Pyatakov, A. Miyata, O. Drachenko, and O. Portugall
Phys. Rev. Materials 5, 074404 – Published 9 July 2021
PDFHTMLExport Citation
Abstract
Authors
Article Text
  • INTRODUCTION
  • EXPERIMENTAL DETAILS
  • RESULTS AND DISCUSSION
  • SUMMARY
  • ACKNOWLEDGMENTS
    • References

    Abstract

    In this paper, the full magnetization process demonstrated by the series of ferrimagnetic intermetallic compounds (Nd,Ho)2Fe14B and Ho2Fe14B and their hydrides with the maximum possible hydrogen content (for the given crystal structure type) is studied theoretically and experimentally using megagauss magnetic fields. We observe field-induced phase transitions from the initial ferrimagnetic to the forced-ferromagnetic state in magnetic fields up to 130 T and describe the magnetization process analytically. We find a drastic decrease of the critical transition fields in the hydrogenated compounds. This is due to extremely strong, nearly twofold reduction of the R-Fe intersublattice exchange interaction because of the combined substitution and hydrogenation effects. A comparative analysis of the magnetization behavior for the system Ho2Fe17−H is also performed.

    • Figure
    • Figure
    • Figure
    • Figure
    • Figure
    • Figure
    • Figure
    1 More
    • Received 26 March 2021
    • Revised 2 June 2021
    • Accepted 10 June 2021

    DOI:https://doi.org/10.1103/PhysRevMaterials.5.074404

    ©2021 American Physical Society

    Physics Subject Headings (PhySH)

    1. Research Areas
    Ferromagnetism
    1. Physical Systems
    Intermetallic compounds
    Condensed Matter, Materials & Applied Physics

    Authors & Affiliations

    N. V. Kostyuchenko1,*, I. S. Tereshina2, E. A. Tereshina-Chitrova3,4, L. A. Ivanov2, M. Paukov4,5, D. I. Gorbunov6, A. V. Andreev3, M. Doerr7, G. A. Politova8,9, A. K. Zvezdin10,11, S. V. Veselova2, A. P. Pyatakov2, A. Miyata12, O. Drachenko12, and O. Portugall12

    • 1Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia
    • 2M.V. Lomonosov Moscow State University, Moscow, Russia
    • 3Institute of Physics CAS, Prague, Czech Republic
    • 4Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
    • 5Nuclear Fuel Cycle Department, Research Centre Rez Ltd., Husinec-Rez, Czech Republic
    • 6Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
    • 7Technische Universität Dresden, Dresden, Germany
    • 8Baikov Institute of Metallurgy and Materials Science RAS, Moscow, Russia
    • 9Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia
    • 10Prokhorov General Physics Institute of RAS, Moscow, Russia
    • 11Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia
    • 12Laboratoire National des Champs Magnetiques Intenses (LNCMI-EMFL), CNRS-UJF-UPS-INSA, Toulouse, France

    • *Corresponding author: nvkost@gmail.com

    Article Text (Subscription Required)

    Click to Expand

    References (Subscription Required)

    Click to Expand
    Issue

    Vol. 5, Iss. 7 — July 2021

    Reuse & Permissions
    Access Options
    Author publication services for translation and copyediting assistance advertisement

    Authorization Required

    Log In
    Other Options
    ×

    Download & Share

    PDFExportReuse & PermissionsCiting Articles (5)
    ×

    Images

    ×

    Sign up to receive regular email alerts from Physical Review Materials

    Log In

    Cancel
    ×

    Search

    Article Lookup

    Paste a citation or DOI
    Enter a citation
    ×