Fig. 5
From: Visualizing hydrogen diffusion in magnetic film through magneto-optical Kerr effect
Analysis of hydrogen diffusion in a 50-nm-thick Co25Pd75 film. a Hydrogen concentration distribution profile at different times by a step of 300 s after exposure to 105 Pa H2 gas. b The experimental data points with the solid fitting curves. The inset shows the fitted diffusion coefficient D at different times with the error bars indicating the uncertainty in the fitting. c The position of the 2, 3, and 4% H/M fronts, plotted as a function of exposure time. d Velocity of the 2–4% H/M fronts derived from c The error bars show the statistical uncertainty in the calculation of velocity
