Fast Synthesis of Co₃O₄ by Microwave-Assisted Hydrothermal Treatment

Figure 4

Temperature dependence of magnetic susceptibility in the ZFC and FC process at  Oe for Co₃O₄ nanoparticles that were synthesized with (a) urea at 180°C during 60 min (CU-60), (b) H₂O₂ at 220°C for 60 min (CH2-60), and (c) H₂O₂ at 220°C for 10 min (CH2-10). (d) A comparison of magnetization versus temperature curves obtained for CH2-60 and CH2-10 samples.