Figure 1

XRD pattern of CFO-CO ceramic compared to those of CFO and CO ones. The strips show the X-ray diffraction for the CoO and CoFe2O4 reference pattern 98-002-8506 and 98-024-7577, respectively. The additional peaks match with Co metal phases.

XRD pattern of CFO-CO ceramic compared to those of CFO and CO ones. The strips show the X-ray diffraction for the CoO and CoFe2O4 reference pattern 98-002-8506 and 98-024-7577, respectively. The additional peaks match with Co metal phases.