Figure 5From: A novel method to fabricate CoFe2O4/SrFe12O19 composite ferrite nanofibers with enhanced exchange coupling effect Magnetic hysteresis loops and tendency of M s and H c of the samples. (a) Magnetic hysteresis loops of the samples with different Co/Sr2+ molar ratios. (b) The tendency of M s and H c of the samples with different Co/Sr2+ molar ratios.Back to article page