Synthesis and characterization of carbon nanotubes decorated with strontium ferrite nanoparticles

A uniform coated compound material was obtained by the in situ sol–gel reaction among modified carbon nanotubes, nitric acid strontium, and nitric acid iron. The results indicated that the carbon nanotubes were coated with M-type magnetoplumbite ferrite, and its size was at the nanometer level. Along with the increase in the content of carbon nanotubes, the tubular structures of the carbon nanotubes were clearer and the coating effect was better. The coercive force of the samples increased simultaneously with the increase in the content of carbon nanotubes.