Fig. 7
From: Visualizing hydrogen diffusion in magnetic film through magneto-optical Kerr effect
Analysis of hydrogen movement during desorption. a By subtracting the negative from the positive remanence state (i.e., the differential image of (Mr+ − Mr−)), Kerr images were sequentially taken at different times after hydrogen desorption started. The scale bar indicates 100 μm. b Remanence to saturation ratio Mr/Ms recorded at various X positions. The curves correspond to different times after the start of hydrogen desorption from the bared Co25Pd75. c Time-dependent position of 2, 2.5, and 3% H/M (H/M: atomic hydrogen (H) to metal (M) ratio) fronts across the defect-free area
