Different　morphology　of　surfactant　capped　SrFe12O19　nanoparticles　have　been　synthesised　using　the　co-precipitation　method,　by　adding　organic　template　(oxalic　acid)　as　dispersant　during　citric　acid　addition.　sodium　hexametaphosphate　and　polyvinyl　pyrrolidone　used　as　capping　agents.　Calcinated　surfactant　capped　SrFe12O19　has　been　characterised　using　X-ray　diffraction,　scanning　electron　microscopy,　transmission　electron　microscopy,　Fourier　transform　infrared　spectroscopy　analysis,　Raman　spectroscopy　and　vibrating　sample　magnetometer.　The　influence　of　the　surfactants　on　the　morphology　of　SrFe12O19　core-shell　nanoparticles　was　studied.　©　The　Institution　of　Engineering　and　Technology　2017.