Moessbauer effect and discovery of new hexagonal ferrites prepared at 980oC

In the present article, undoped and Co-doped M-type Sr-hexaferrites have been prepared at low temperatures down to 980oC for the first time by the usual ceramic procedure and sintering technique. On these materials, a Co-K α X-ray diffraction analysis and the room temperature 57Fe Moessbauer spectroscopy (MES) were carefully performed. The results obtained are described and interpreted. The mechanism of Co- substitution partially in place of iron and the site of its occupancy were proposed and established