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

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Author(s): Ward L. Johnson; Sudook A. Kim; Stephen E. Russek; Pavel Kabos;
Title: Brillouin light scattering from pumped uniform-precession and low-k magnons in Ni81Fe19
Published: March 04, 2005
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
Pages: pp. 102507-1 - 102507-3
Keywords: Brillouin light scattering;magnons;Permalloy;thin films
Research Areas: Nanomaterials
PDF version: PDF Document Click here to retrieve PDF version of paper (56KB)