Polaritons in ferrimagnets

F. A. Oliveira, A. F. Khater, E. F. Sarmento, D. R. Tilley

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Expressions for the magnetic susceptibility of a two-sublattice ferrimagnet are derived from semiclassical equations of motion. The dispersion equation of a bulk polariton is derived in general form, and the properties of bulk polaritons in ferrimagnets are discussed. The susceptibility is also used to calculate the magnetostatic correction to the frequency of long-wavelength magnons. The results are illustrated with numerical calculations for rare-earth iron garnets, and details of the mean field model and parameters used are given in an appendix.

Original languageEnglish
Article number020
Pages (from-to)4021-4031
Number of pages11
JournalJournal of Physics C: Solid State Physics
Volume12
Issue number19
DOIs
Publication statusPublished - 1979
Externally publishedYes

Fingerprint

ferrimagnets
Magnetostatics
Magnets
Garnets
Magnetic susceptibility
polaritons
Rare earths
Equations of motion
Iron
magnetic permeability
Wavelength
magnetostatics
garnets
sublattices
magnons
equations of motion
rare earth elements
iron
wavelengths

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Oliveira, F. A., Khater, A. F., Sarmento, E. F., & Tilley, D. R. (1979). Polaritons in ferrimagnets. Journal of Physics C: Solid State Physics, 12(19), 4021-4031. [020]. https://doi.org/10.1088/0022-3719/12/19/020

Polaritons in ferrimagnets. / Oliveira, F. A.; Khater, A. F.; Sarmento, E. F.; Tilley, D. R.

In: Journal of Physics C: Solid State Physics, Vol. 12, No. 19, 020, 1979, p. 4021-4031.

Research output: Contribution to journalArticle

Oliveira, FA, Khater, AF, Sarmento, EF & Tilley, DR 1979, 'Polaritons in ferrimagnets', Journal of Physics C: Solid State Physics, vol. 12, no. 19, 020, pp. 4021-4031. https://doi.org/10.1088/0022-3719/12/19/020
Oliveira FA, Khater AF, Sarmento EF, Tilley DR. Polaritons in ferrimagnets. Journal of Physics C: Solid State Physics. 1979;12(19):4021-4031. 020. https://doi.org/10.1088/0022-3719/12/19/020
Oliveira, F. A. ; Khater, A. F. ; Sarmento, E. F. ; Tilley, D. R. / Polaritons in ferrimagnets. In: Journal of Physics C: Solid State Physics. 1979 ; Vol. 12, No. 19. pp. 4021-4031.
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