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arXiv · 2001.11313

Neutron inelastic scattering study of rare-earth orthoferrite HoFeO$_3$

A. K. Ovsyanikov·I. A. Zobkalo·W. Schmidt·S. N. Barilo·S. A. Guretskii·V. Hutanu
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Abstract

By the single crystal inelastic neutron scattering the orthoferrite HoFeO3 was studied. We show that the spin dynamics of the Fe subsystem does not change through the spin-reorientation transitions. The observed spectrum of magnetic excitations was analyzed in the frames of linear spin-wave theory. Within this approach the antiferromagnetic exchange interactions of nearest neighbors and next nearest neighbors were obtained for Fe subsystem. Parameters of Dzyaloshinskii-Moriya interactions at Fe subsystem were refined. The temperature dependence of the gap in Fe spin-wave spectrum indicates the temperature evolution of the anisotropy parameters. The estimations for the values of Fe-Ho and Ho-Ho exchange interaction were made as well.

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A. K. Ovsyanikov, I. A. Zobkalo, W. Schmidt, S. N. Barilo, S. A. Guretskii, V. Hutanu. 2020-01-30. Neutron inelastic scattering study of rare-earth orthoferrite HoFeO$_3$. https://doi.org/10.1016/j.jmmm.2020.166855

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