Fig. 10From: The remanence ratio in CoFe2O4 nanoparticles with approximate single-domain sizesThe field derivative dM/dH of the virgin curves at 10 K for LT16 (a), MT16 (b), and HT16 (c) samples. The inset in (c) shows local dM/dH data around 11.70 kOe of the HT16 sample. The pink solid line is the curve of Lorentz fit in order to find the peak positionBack to article page