Fig. 1: The magnetic domain evolution in amorphous ferrimagnetic GdFeCo film.
From: Field-free topological behavior in the magnetic domain wall of ferrimagnetic GdFeCo

a Schematic illustration of the layer structure. b The temperature dependence of the reduced remnant magnetization acquired from M–H measurements in Gd15+x(Fe94Co6)85−x (x = 0.2), showing the SRT between in-plane and out-of-plane magnetization at about 290 K. c The lateral magnetic component distributions deduced from the selected domain wall region at 243 K by using the transport-of-intensity equation (TIE) analysis. The color wheel for the direction of in-plane magnetization is displayed in the inset. d–h Over-focus L-TEM images at different temperatures showing the corresponding domain wall evolution with increasing temperature. i The magnified lateral magnetic component distributions by TIE demonstrating the decreasing of the in-plane magnetization beside the domain wall at 300 K. The scale bar is 2 μm.