Coupling between magnon and ligand-field excitations in magnetoelectric Tb3Fe5 O12 garnet

T. D. Kang, E. Standard, K. H. Ahn, A. A. Sirenko, G. L. Carr, S. Park, Young Jai Choi, M. Ramazanoglu, V. Kiryukhin, S. W. Cheong

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The spectra of far-infrared transmission in Tb3 Fe5 O12 magnetoelectric single crystals have been studied in the range between 15 and 100 cm-1, in magnetic fields up to 10 T, and for temperatures between 5 and 150 K. We attribute some of the observed infrared-active excitations to electric dipole transitions between ligand-field split states of Tb3+ ions. Anticrossing between the magnetic exchange excitation and the ligand-field transition occurs at the temperature between 60 and 80 K. The corresponding coupling energy for this interaction is 6cm -1. Temperature-induced softening of the hybrid IR excitation correlates with the increase in the static dielectric constant. We discuss the possibility for hybrid excitations of magnons and ligand-field states and their possible connection to the magnetoelectric effect in Tb3 Fe 5 O12.

Original languageEnglish
Article number014414
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume82
Issue number1
DOIs
Publication statusPublished - 2010 Jul 15

Fingerprint

Garnets
garnets
Ligands
ligands
excitation
Magnetoelectric effects
Infrared transmission
Temperature
Ion exchange
Permittivity
Single crystals
softening
Ions
electric dipoles
Magnetic fields
magnons
Infrared radiation
temperature
permittivity
single crystals

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kang, T. D. ; Standard, E. ; Ahn, K. H. ; Sirenko, A. A. ; Carr, G. L. ; Park, S. ; Choi, Young Jai ; Ramazanoglu, M. ; Kiryukhin, V. ; Cheong, S. W. / Coupling between magnon and ligand-field excitations in magnetoelectric Tb3Fe5 O12 garnet. In: Physical Review B - Condensed Matter and Materials Physics. 2010 ; Vol. 82, No. 1.
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abstract = "The spectra of far-infrared transmission in Tb3 Fe5 O12 magnetoelectric single crystals have been studied in the range between 15 and 100 cm-1, in magnetic fields up to 10 T, and for temperatures between 5 and 150 K. We attribute some of the observed infrared-active excitations to electric dipole transitions between ligand-field split states of Tb3+ ions. Anticrossing between the magnetic exchange excitation and the ligand-field transition occurs at the temperature between 60 and 80 K. The corresponding coupling energy for this interaction is 6cm -1. Temperature-induced softening of the hybrid IR excitation correlates with the increase in the static dielectric constant. We discuss the possibility for hybrid excitations of magnons and ligand-field states and their possible connection to the magnetoelectric effect in Tb3 Fe 5 O12.",
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Kang, TD, Standard, E, Ahn, KH, Sirenko, AA, Carr, GL, Park, S, Choi, YJ, Ramazanoglu, M, Kiryukhin, V & Cheong, SW 2010, 'Coupling between magnon and ligand-field excitations in magnetoelectric Tb3Fe5 O12 garnet', Physical Review B - Condensed Matter and Materials Physics, vol. 82, no. 1, 014414. https://doi.org/10.1103/PhysRevB.82.014414

Coupling between magnon and ligand-field excitations in magnetoelectric Tb3Fe5 O12 garnet. / Kang, T. D.; Standard, E.; Ahn, K. H.; Sirenko, A. A.; Carr, G. L.; Park, S.; Choi, Young Jai; Ramazanoglu, M.; Kiryukhin, V.; Cheong, S. W.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 82, No. 1, 014414, 15.07.2010.

Research output: Contribution to journalArticle

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T1 - Coupling between magnon and ligand-field excitations in magnetoelectric Tb3Fe5 O12 garnet

AU - Kang, T. D.

AU - Standard, E.

AU - Ahn, K. H.

AU - Sirenko, A. A.

AU - Carr, G. L.

AU - Park, S.

AU - Choi, Young Jai

AU - Ramazanoglu, M.

AU - Kiryukhin, V.

AU - Cheong, S. W.

PY - 2010/7/15

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N2 - The spectra of far-infrared transmission in Tb3 Fe5 O12 magnetoelectric single crystals have been studied in the range between 15 and 100 cm-1, in magnetic fields up to 10 T, and for temperatures between 5 and 150 K. We attribute some of the observed infrared-active excitations to electric dipole transitions between ligand-field split states of Tb3+ ions. Anticrossing between the magnetic exchange excitation and the ligand-field transition occurs at the temperature between 60 and 80 K. The corresponding coupling energy for this interaction is 6cm -1. Temperature-induced softening of the hybrid IR excitation correlates with the increase in the static dielectric constant. We discuss the possibility for hybrid excitations of magnons and ligand-field states and their possible connection to the magnetoelectric effect in Tb3 Fe 5 O12.

AB - The spectra of far-infrared transmission in Tb3 Fe5 O12 magnetoelectric single crystals have been studied in the range between 15 and 100 cm-1, in magnetic fields up to 10 T, and for temperatures between 5 and 150 K. We attribute some of the observed infrared-active excitations to electric dipole transitions between ligand-field split states of Tb3+ ions. Anticrossing between the magnetic exchange excitation and the ligand-field transition occurs at the temperature between 60 and 80 K. The corresponding coupling energy for this interaction is 6cm -1. Temperature-induced softening of the hybrid IR excitation correlates with the increase in the static dielectric constant. We discuss the possibility for hybrid excitations of magnons and ligand-field states and their possible connection to the magnetoelectric effect in Tb3 Fe 5 O12.

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