TY - JOUR
T1 - Inelastic Neutron Scattering on Multiferroics NdFe3(BO3)4
AU - Hayashida, Shohei
AU - Soda, Minoru
AU - Itoh, Shinichi
AU - Yokoo, Tetsuya
AU - Ohgushi, Kenya
AU - Kawana, Daichi
AU - Masuda, Takatsugu
N1 - Funding Information:
We thank H. Matsuda, and K. Asoh for their contribution to the single crystal growth. The neutron scattering experiment was approved by the Neutron Scattering Program Advisory Committee of IMSS, KEK (Proposal No. 2013S01 and 2014S01). This work was supported by KAKENHI (24340077). S. Hayashida was supported by the Japan Society for the Promotion of Science through the Program for Leading Graduate Schools (MERIT). ————
Publisher Copyright:
© 2015 The Authors. Published by Elsevier B.V.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
KW - Inelastic neutron scattering
KW - Multiferroics
KW - NdFe(BO)
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U2 - 10.1016/j.phpro.2015.12.018
DO - 10.1016/j.phpro.2015.12.018
M3 - Conference article
AN - SCOPUS:84974712353
SN - 1875-3884
VL - 75
SP - 127
EP - 133
JO - Physics Procedia
JF - Physics Procedia
T2 - 20th International Conference on Magnetism, ICM 2015
Y2 - 5 July 2015 through 10 July 2015
ER -