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Origins of the damping in perpendicular media: Three component ferromagnetic resonance linewidth in Co–Cr–Pt alloy films
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10.1063/1.2834835
/content/aip/journal/apl/92/2/10.1063/1.2834835
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/2/10.1063/1.2834835

Figures

Image of FIG. 1.
FIG. 1.

Graphs (a) and (b) show results on the ferromagnetic resonance (FMR) field and half power linewidth as a function of the angle between the static external field and film normal, respectively, for sample C. The inset shows the sample field , magnetization , and angle geometry. is the angle between and the film normal. The open circles show the data and the solid curves show computed results. The dotted, dashed, and dot-dashed curves in (b) show the computed linewidth components for inhomogeneity line broadening (ILB), two magnon grain boundary scattering (GBS), and magnon electron scattering, respectively. The curve is shown in magnification.

Image of FIG. 2.
FIG. 2.

The top diagrams show the change in the spin wave dispersion band of frequency vs wave number with field angle , with the FMR frequency at held constant. The horizontal lines and dots mark the -values for the degenerate modes. The graph shows the corresponding curves for the density of states for the degenerate spin waves (solid curves), as well as the Fourier transform of the self correlation between and the grain boundary surface anisotropy fields (dashed curve), as a function of , based on the parameters for sample C, along with an exchange stiffness parameter value of .

Tables

Generic image for table
Table I.

Material parameters for the Co–Cr–Pt film samples.

Generic image for table
Table II.

Ferromagnetic resonance linewidth fit parameters.

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/content/aip/journal/apl/92/2/10.1063/1.2834835
2008-01-15
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Origins of the damping in perpendicular media: Three component ferromagnetic resonance linewidth in Co–Cr–Pt alloy films
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/2/10.1063/1.2834835
10.1063/1.2834835
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