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- W2015260878 abstract "The author considers the combined influence of eddy currents plus spin dynamics on limiting the quasi-coherent rotational switching speed of thin-film heads. The results represent lower physical limits, and exclude potentially slower and more complex incoherent reversal mechanisms. A simplified head model employs the 1-D eddy current diffusion equation coupled to the planar form of Gilbert's equations for spin dynamics. Effects of head saturation and internal demagnetization fields are included. When Gamma not=t/sub e/ omega /sub r/=(eddy current diffusion time)*(spin resonance frequency) is of the order 100, numerically integrated results for the time-dependent, volume-averaged magnetization <M(t)> can be described by two simple analytical models applicable to cases where the applied reversing field H/sub a/<or=H/sub sat/, or H/sub a/>>H/sub sat/, where H/sub sat/ is that field required to saturate the yoke. For Gamma <or=10, the eddy current models progressively fail due to the influence of spin-inertia.<<ETX>>" @default.
- W2015260878 created "2016-06-24" @default.
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- W2015260878 date "1991-11-01" @default.
- W2015260878 modified "2023-10-09" @default.
- W2015260878 title "Eddy current plus spin-dynamical limitations to switching speed in thin-film heads" @default.
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- W2015260878 doi "https://doi.org/10.1109/20.278937" @default.
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