Full text loading...
A sketch of the Kerr measurement setup (a) and Kerr magnetization hysteresis loops measured with magnetic field aligned at different angles with respect to the easy axis direction, ϕ ((b)-(d)).
Magnetic domain evolution with applied field and time for the descending and ascending branches of sample I ((a) and (b)) and sample II ((c) and (d)).
Magnetization relaxation curves at different applied magnetic fields for the descending and ascending branches in the hysteresis loop of sample I ((a) and (b)) and sample II ((c) and (d)) measured by SMOKE. The solid lines indicate the relaxation curves fitted by Fatuzzo-Labrune model. The red hollow points are the evolution of the ratio of the area having not been reversed to the total area of one Kerr microscopy image.
Magnetization relaxation curves as a function of ln(t) of the descending (a) and ascending (b) branches in the hysteresis loop and angular dependence of calculated magnetic energy for descending (c) and ascending (d) reversals in sample II. The red lines in (a) and (b) indicate the maximum slope of the relaxation curves.
The nucleation densities, Barkhausen volumes, switching fields, interfacial exchange coupling energies and the dispersions of the activated energy barriers, exchange coupling energies and direction of anisotropic axes for the descending and ascending branches of two samples.
Article metrics loading...