Abstract
Barium hexaferrite (BaFe12O19) has attracted research attention due to its diverse applications. This study reports the synthesis of barium M-hexaferrite (BaFe12-2xCoxZnxO19) powder using co-precipitation of BaCO3 and FeCl3.6H2O powder, Co and Zn powder as a dopant material on the variation of x = 0, 0.2, 0.4, 0.6, 0.8, and 1. Results show that co-precipitation is an effective method for the synthesis of nanomaterial barium M-hexaferrites (BaFe12-2xCoxZnxO19) containing >89% of Fe elements and an average particle size of 50 nm. The DTA/TGA analyses show phase transformation at T ≤ 285°C and T = 750-840°C. The results of refinement using the Rietveld method show that the barium M-hexaferrite phase begins to form at low temperatures, with the best yield at x = 0.4. At high temperatures T > 740°C, it tends to form single-phase α-Fe2O3 (hematite). Substitution ion dopant Co/Zn only slightly changes the lattice parameters of the hexagonal basic crystal structure
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