Figure 3

(a) Definition of the parameters and angles used in TR-MOKE experiments. The red circle indicates the magnetization precession. θ is the equilibrium direction of the magnetization. θK is measured by the probe beam at a given time delay (Δt). (b) The TR-MOKE data (open symbols) and model fitting of θK (black curves) for the 400 °C sample at 76°, for varying Hext from 2.0 to 20 kOe.