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Publication Citation: Ferromagnetic Resonance Linewidth in Thin Films Coupled to NiO

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Author(s): Robert D. McMichael; Mark D. Stiles; P J. Chen; William F. Egelhoff Jr.;
Title: Ferromagnetic Resonance Linewidth in Thin Films Coupled to NiO
Published: January 01, 1998
Abstract: The out-of-plane angular dependence of the ferromagnetic resonance linewidth, Δ H is described by nearly angle-independent damping parameters. In the NiO-coupled films, however, the damping was found to depend strongly on magnetization orientation, with linewidth values comparable to the control samples at normal orientation, but several times larger when the magnetization lies in plane. The additional linewidth in the NiO-coupled films follows the angular dependence of the number of nearly degenerate spin wave modes, in agreement with the predictions of a two-magnon scattering model of damping which incorporates a spin wave dispersion relation suitable for ultra-thin films.
Citation: Journal of Applied Physics
Volume: 83
Issue: 11
Pages: pp. 7037 - 7039
Keywords: magnetic films,parameters spin wave modes,ultra-thin films
Research Areas: Nanomagnetics
PDF version: PDF Document Click here to retrieve PDF version of paper (510KB)