Fig. 3

Evaluation of the microwave absorption properties of the samples. The minimum RL values for (a) the as-obtained multilayer graphene based absorber, (b) ball milled multilayer graphene based absorber, (c) the MG/h-BNNP-10% based absorber, (d) the MG/h-BNNP-20% based absorber, (e) the MG/h-BNNP 30% based absorber, and (f) the MG/h-BNNP-40% based absorber