Inelastic neutron scattering studies of YFeO${}_3$

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 $J_1=-4.23\pm 0.08$ (nearest-neighbors only) or $J_1=-4.77\pm 0.08$ meV and $J_2=-0.21\pm 0.04$ 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.

6 page, 4 figures

References in corpus (2)

• The new Cold Neutron Chopper Spectrometer at the Spallation Neutron Source - Design and Performance
• The Spin State and Spectroscopic Modes of Multiferroic BiFeO3

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