Extrinsic contributions to spin-wave damping and renormalization in thin Ni50Fe50 films

Authors
Azevedo, A Oliveira, AB de Aguiar, FM Rezende, SM
Citation
A. Azevedo et al., Extrinsic contributions to spin-wave damping and renormalization in thin Ni50Fe50 films, PHYS REV B, 62(9), 2000, pp. 5331-5333
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
9
Year of publication
2000
Pages
5331 - 5333
Database
ISI
SICI code
0163-1829(20000901)62:9<5331:ECTSDA>2.0.ZU;2-V
Abstract
Ferromagnetic resonance has been used to study the room-temperature linewid th and frequency shift of the q=0 spin-wave mode in thin films of NiFe sput tered on Si(100) substrates. The data on the variation of the linewidth and resonance field with film thickness are completely consistent with the ext rinsic mechanism recently proposed by Arias and Mills based on momentum non conserving two-magnon scattering off defects on the film surfaces.