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Brillouin light scattering from pumped uniform-precession and low-k magnons in Ni81Fe19

Published

Author(s)

Ward L. Johnson, Sudook A. Kim, Stephen E. Russek, Pavel Kabos

Abstract

A method is presented for performing Brillouin-light-scattering measurements on uniform-precession and low-wave-number (Iow-k) magnons excited by a microwave magnetic field in opaque magnetic specimens. The optical configuration is similar to that employed in conventional 180^0 backscattering measurements, except that the incident and specularly reflected beams pass through the collection lens along different parallel paths. Examples of spectra from Ni_81 Fe_19 are presented, which include the first observation of pumped low-$k$ magnons arising from microwave excitation in a metallic film.
Citation
Applied Physics Letters

Keywords

Brillouin light scattering, magnons, Permalloy, thin films

Citation

Johnson, W. , Kim, S. , Russek, S. and Kabos, P. (2005), Brillouin light scattering from pumped uniform-precession and low-k magnons in Ni81Fe19, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50065 (Accessed April 13, 2024)
Created March 3, 2005, Updated October 12, 2021