Fig. 4From: One-pot synthesis of monodisperse CoFe2O4@Ag core-shell nanoparticles and their characterizationHysteresis loops for nanoparticles: (a) and (b) are for the CoFe2O4 nanoparticles (red line) and CoFe2O4 @Ag nanoparticles (blue line), respectively, at a 300 K and b at 5 KBack to article page