((a)-(c)) TEM images for samples C1 (a), C2 (b), and C3 (c).
(Color online) (a)-(f) FORC diagrams F (,) (normalized to the maximum value) corresponding to sample C2 computed for α = 0 (a), 0.278 (b), 0.515 (c), and 0.648 (d); F(,) for sample C1 and α ≡ N = 0.41 (e); F(,) for sample C3 and α = 0.486 (f).
Illustration of N measurement procedure for sample C2.
((a) and (b)) Grain size distribution for samples C1 (a) and C2 (b) measured by TEM (bar chart) and determined from the coercivity distribution C(HC) using Eq. (6) (solid line) and a lognormal HK distribution of probable value 15 800 Oe and standard deviation σHK = 0.08.
((a) and (b)) Temperature dependence of N (solid symbols) and of the I(HI) width, HIW (I(HIW) = 0.5 I(HI = 0)) (open symbols), for samples C1 (circles) and C2 (rectangles) (a); C(HC) parameters: probable value (solid symbols) and full width at half maximum (open symbols) for sample C1 (circles) and C2 (rectangles) (b).
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