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Effect of grain size on ion migration parameters: (a) Typical ΔC peak(s) found after fitting the TID traces for samples with 1.7 μm grain size (circle) and with 11 μm grain size (diamond). Peaks A and B are shown in purple and orange, respectively. (b) Concentration of mobile ions, (c) activation energy, and (d) diffusion coefficient, extracted by using equations in section S2 of the Supporting Information.
