Microbial-Physical Synthesis of Fe and Fe₃O₄ Magnetic Nanoparticles Using Aspergillus niger YESM1 and Supercritical Condition of Ethanol

Figure 5

XRD analysis of nanoparticles formed at supercritical condition. (a and b) illustrate presence of Fe and Fe₃O₄ peaks, respectively.

(a) Fe

(b) Fe₃O₄