Fig. 7From: Composition, Electronic and Magnetic Investigation of the Encapsulated ZnFe2O4 Nanoparticles in Multiwall Carbon Nanotubes Containing Ni ResidualsMagnetization measurements under ZFC and FC conditions in an applied magnetic field of 50 Oe for a ZnFe2O4/mCNTs and c mCNTs. b Magnetization versus temperature measurement of ZnFe2O4/mCNTs at an applied field of 5000 Oe. d M-H loop of ZnFe2O4/mCNTs at 4 K. The inset shows an enlarged view of the M-H at 4 KBack to article page