Abstract:
The M-type Sr-ferrite powders were prepared by using sol-gel method. Powder samples were prepared at 850˚C and different holding time. The phase, size and magnetic properties of the powder samples were characterized by using XRD, SEM and network analyzer. The result indicates that the products that were prepared at 850˚C and 2 h were pure. The ppy/Sr-ferrite composites were obtained by in-situ polymerization method by different treatment agent. By testing the coercivity, magnetization and conductivity of the composites obtained by different treatment agents, The effect of treatment agent on the ppy/Sr-ferrite composites properties was given a detailed explanation.