Synthesis of Zn doped barium M-Hexaferrite (BaFe12_xZnxO19) has been peformed by co- precipitation method. The purified iron sand from Tulungagung is used as a precursor of Fe3O4. Synthesis of Zn doped Barium M-Hexaferrite with Variations of x = 0.3, 0.5 and 0.7 has been calcined at temperatures of 10000C for 5 hours. Ion Zn2+ (with 0 = x = 0.7 wt %) does not change the crystal structure of Bar…