Optical determination of the exchange stiffness constant in an iron garnet

Keita Matsumoto, Thomas Brächer, Philipp Pirro, Tobias Fischer, Dmytro Bozhko, Moritz Geilen, Frank Heussner, Thomas Meyer, Burkard Hillebrands, Takuya Satoh

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Brillouin light scattering measurements were performed in the backscattering geometry on a Bi-substituted rare earth iron garnet. We observed two different peaks: One is attributed to a surface spin wave in the dipole-exchange regime while the other is referred to as a backscattering magnon mode, because the incident light in this case was scattered backward by exchange-dominated spin wave inside the material. We propose a method to estimate the exchange stiffness constant from the frequency of the backscattering magnon mode. The obtained value is comparable with the previously reported values for Y3Fe5O12.

Original languageEnglish
Article number070308
JournalJapanese Journal of Applied Physics
Volume57
Issue number7
DOIs
Publication statusPublished - Jul 1 2018

Fingerprint

Garnets
Backscattering
garnets
stiffness
backscattering
Spin waves
Stiffness
Iron
iron
magnons
Brillouin scattering
Light scattering
Surface waves
Rare earths
light scattering
rare earth elements
dipoles
Geometry
estimates
geometry

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Matsumoto, K., Brächer, T., Pirro, P., Fischer, T., Bozhko, D., Geilen, M., ... Satoh, T. (2018). Optical determination of the exchange stiffness constant in an iron garnet. Japanese Journal of Applied Physics, 57(7), [070308]. https://doi.org/10.7567/JJAP.57.070308

Optical determination of the exchange stiffness constant in an iron garnet. / Matsumoto, Keita; Brächer, Thomas; Pirro, Philipp; Fischer, Tobias; Bozhko, Dmytro; Geilen, Moritz; Heussner, Frank; Meyer, Thomas; Hillebrands, Burkard; Satoh, Takuya.

In: Japanese Journal of Applied Physics, Vol. 57, No. 7, 070308, 01.07.2018.

Research output: Contribution to journalArticle

Matsumoto, K, Brächer, T, Pirro, P, Fischer, T, Bozhko, D, Geilen, M, Heussner, F, Meyer, T, Hillebrands, B & Satoh, T 2018, 'Optical determination of the exchange stiffness constant in an iron garnet', Japanese Journal of Applied Physics, vol. 57, no. 7, 070308. https://doi.org/10.7567/JJAP.57.070308
Matsumoto K, Brächer T, Pirro P, Fischer T, Bozhko D, Geilen M et al. Optical determination of the exchange stiffness constant in an iron garnet. Japanese Journal of Applied Physics. 2018 Jul 1;57(7). 070308. https://doi.org/10.7567/JJAP.57.070308
Matsumoto, Keita ; Brächer, Thomas ; Pirro, Philipp ; Fischer, Tobias ; Bozhko, Dmytro ; Geilen, Moritz ; Heussner, Frank ; Meyer, Thomas ; Hillebrands, Burkard ; Satoh, Takuya. / Optical determination of the exchange stiffness constant in an iron garnet. In: Japanese Journal of Applied Physics. 2018 ; Vol. 57, No. 7.
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