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Ferromagnetic Resonance Linewidth Models for Perpendicular Media



Robert D. McMichael


Ferromagnetic resonance linewidth in pendicular recording media is modeled with inhomogeneous uniaxial anisotropy field Hu and with tilting of the easy axes from the film normal. The linewidth is calculated using both a local resonance model and a classical equivalent of the two-magnon model. Linewidth due to Hu variations and linewidth due to easy axis tilting are shown to produce very different angular dependence, and when the two-magnon models are valid, the linewidth is also shown to depend on inter-granular exchange coupling.
Journal of Applied Physics
No. 11


angular dependence, ferromagnetic resonance, inhomogeneous uniaxial anisotropy, two-magnon models


McMichael, R. (2004), Ferromagnetic Resonance Linewidth Models for Perpendicular Media, Journal of Applied Physics (Accessed May 23, 2024)


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Created June 1, 2004, Updated February 17, 2017