Green Synthesis Methods of CoFe₂O₄ and Ag-CoFe₂O₄ Nanoparticles Using Hibiscus Extracts and Their Antimicrobial Potential

Figure 7

Magnetization versus applied field of the Ag-cobalt ferrite nanoparticles obtained by self-combustion using (a) hibiscus flower extract and (b) hibiscus leaf extract.

(a)

(b)