Fig. 9.
(a) Microwave absorption for 20 and 70 wt% Ni0.5Zn0.4Cu0.1Fe2O4 nanocomposites with a thickness of 10 mm. (b) 20 wt% Ni0.5Zn0.4Cu0.1Fe2O4 nanocomposites with different samples thickness and prepared without and with heat treatment at 1,100oC for 2 hours. (Adapted from ref. (129).)