Inelastic Neutron Scattering on Multiferroics NdFe3(BO3)4

Shohei Hayashida, Minoru Soda, Shinichi Itoh, Tetsuya Yokoo, Kenya Ohgushi, Daichi Kawana, Takatsugu Masuda

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Inelastic neutron scattering experiment is performed on single crystals of multiferroics NdFe3(11BO3)4 to explore the magnetic excitations. Fe-centered dispersive excitation with the band width of 5 meV is observed along the crystallographic c∗ direction and that of 3 meV is along the a∗ direction. The energy gap of 0.57 meV due to an axial-type anisotropy is observed at the AF zone center. The energy of Nd-centered flat excitation is 1 meV. Furthermore, anticrossing of the Fe- and Nd-centered excitations is observed, meaning the existence of the f -d coupling, i.e., the interaction between the Nd3+ and Fe3+ moments. Spin-wave analysis on the observed neutron spectrum revealed the underlying magnetic Hamiltonian in NdFe3(11BO3)4. Discussion on the axial-type anisotropy in the ab-plane based on the magnetic model leads to the conclusion that the anisotropy of the Nd3+ ion plays a main role in the determination of the structures of both magnetic moment and electric polarization in NdFe3(BO3)4.

Original languageEnglish
Pages (from-to)127-133
Number of pages7
JournalPhysics Procedia
Volume75
DOIs
Publication statusPublished - 2015 Jan 1
Event20th International Conference on Magnetism, ICM 2015 - Barcelona, Spain
Duration: 2015 Jul 52015 Jul 10

Keywords

  • Inelastic neutron scattering
  • Multiferroics
  • NdFe(BO)

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Hayashida, S., Soda, M., Itoh, S., Yokoo, T., Ohgushi, K., Kawana, D., & Masuda, T. (2015). Inelastic Neutron Scattering on Multiferroics NdFe3(BO3)4. Physics Procedia, 75, 127-133. https://doi.org/10.1016/j.phpro.2015.12.018