Synthesis of coprecipitated strontium hexaferrite nanoparticles in the presence of polyvinyl alcohol

► Producing SrFe12O19 particles with average sizes of 15 and 61 nm before and after calcination at 650 °C, respectively. ► Obtaining the single phase SrFe12O19 after calcination at a low temperature (650 °C). ► Decreasing coercivity from 4711 to 3216 Oe with particle size reduction. ► Usage of PVA as an effective protective agent in size reduction of coprecipitated SrFe12O19 particles.