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(a) The Co layer thickness dependence of coercivity for Pt/Co/Pt films. The curve is used as a visual guide. (b) A hysteresis loop for a Pt/Co(0.8 nm)/Pt film measured by PMOKE with applied field perpendicular to film plane. (c) The effective perpendicular magnetic anisotropy energy multiplied by as a function of as measured by PMOKE (●) and ferromagnetic resonance (○). Solid line is a fit to the experimental data.
Signals of TRMOKE measured with applied field of 4 kOe directed at 60 deg. from the film normal in (a) Pt/Co(2.0 nm)/Pt and (b) Pt/Co(0.8 nm)/Pt films. Solid curves are the calculated damped harmonic function superposed on an exponential decay parameter-fitted to the experimental data.
Magnetic field angle dependence of precession frequency (○) and inverse precession life-time (●) for (a) Pt/Co(2.0 nm)/Pt and (b) Pt/Co(0.8 nm)/Pt films. Solid and broken curves are the calculated data of and parameter-fitted to the experimental data.
Inverse thickness dependence of (a) Gilbert damping constant and (b) relaxation frequency for films. The values obtained from the time-resolved magneto-optical Kerr effect and ferromagnetic resonance are shown with the solid (●) and open circles (○), respectively. The reported values of for films are also shown with open triangles (△). Solid and broken lines are fitted to the experimental data for .
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