Inelastic neutron scattering studies of YFeO$_3$

ORAL

Abstract

Spin waves in the the rare earth orthorferrite YFeO$_3$ have been studied by inelastic neutron scattering and analyzed with a full four-sublattice model including contributions from both the weak ferromagnetic and hidden antiferromagnetic orders. Antiferromagnetic (AFM) exchange interactions of $J_1 = -4.23\pm0.08$ meV (nearest-neighbors only) or $J_1 = -4.77\pm0.08 $ meV and $J_2= -0.21\pm0.03$ meV lead to excellent fits for most branches at both low and high energies. An additional branch associated with the hidden antiferromagnetic order was observed. This work paves the way for studies of other materials in this class containing spin reorientation transitions and magnetic rare earth ions.

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Authors

  • Steven Hahn

    • Quantum Condensed Matter Division, Oak Ridge National Laboratory

  • Andrey Podlesnyak

    • Oak Ridge National Laboratory
    • Quantum Condensed Matter Division, Oak Ridge National Laboratory

  • Randy Fishman

    • Oak Ridge National Laboratory
    • Materials Science and Technology Division, Oak Ridge National Laboratory

  • Garrett Granroth

    • Oak Ridge National Laboratory
    • Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge TN 37830 USA
    • ORNL, TN
    • Neutron Data Analysis and Visualization Division, Oak Ridge National Laboratory
    • Oak Ridge National Lab
    • Quantum Condensed Matter Division, Oak Ridge National Laboratory

  • Alexander Kolesnikov

    • Chemical and Engineering Materials Divison, Oak Ridge National Laboratory

  • Ekaterina Pomjakushina

    • Laboratory for Developments and Methods, Paul Scherrer Institut

  • Kazimierz Conder

    • Laboratory for Developments and Methods, Paul Scherrer Institut

  • Georg Ehlers

    • Spallation Neutron Source, Oak Ridge National Laboratory
    • Oak Ridge National Laboratory
    • Quantum Condensed Matter Division, Oak Ridge National Laboratory