FMR spectra: derivative of the absorbed power vs applied field H. (Effect of magnetic coupling.) (a) Permalloy film, (b) Co film, and (c) Py/Cu(10nm)/Co trilayer. Frequency .
Frequency vs applied magnetic field. Symbols: experimental data, lines: theoretical curves. (a) Separate Py and Co thin films and (b) Py/Cu(2 nm)/Co trilayer.
Frequency vs applied magnetic field. Symbols: experimental data, lines: theoretical curves. (a) Py/Cu(10 nm)/Co trilayer and (b) Py/Cu(10 nm)/Co/NiO spin valve system.
Hysteresis curves for (a) Py/Co(10 nm)/Co/NiO and (b) Py/Co(2 nm)/Co/NiO spin valve system.
Magnetic parameters for the individual thin films: saturation magnetization , in-plane anisotropy field , gyromagnetic ratio , and coercive field .
The effective coupling parameters , the exchange anisotropy field , and the coercive field for the coupled trilayer and the spin valve systems.
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