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

doi:10.1016/j.jmmm.2020.166855

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

Materials Science 2020-04-09 v3 Strongly Correlated Electrons

Authors: 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.

Keywords

orthoferrite inelastic neutron scattering spin dynamics spin-wave theory exchange interactions

Cite

@article{arxiv.2001.11313,
  title  = {Neutron inelastic scattering study of rare-earth orthoferrite HoFeO$_3$},
  author = {A. K. Ovsyanikov and I. A. Zobkalo and W. Schmidt and S. N. Barilo and S. A. Guretskii and V. Hutanu},
  journal= {arXiv preprint arXiv:2001.11313},
  year   = {2020}
}

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

Abstract

Keywords

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