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 October 10, 2025)
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Brillouin light scattering from pumped uniform-precession and low-k magnons in Ni81Fe19
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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
Pub Type
Journals
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Keywords
Brillouin light scattering, magnons, Permalloy, thin films
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Created March 3, 2005, Updated October 12, 2021