Synthesis and characterization of composites for microwave devices

Abstract

The present study described the synthesis and assessment of different properties of ferrite-polymer composites. These composites were fabricated by the appropriate mixture of ferrite nanoparticles and polypyrrole. A versatile chemical technique known as co-precipitation was applied in the preparation of ferrite materials. The in-situ polymerization scheme was chosen to synthesize the polymeric polypyrrole base. A series of samples with zero to hundred percent ferrite contents were prepared. These include pure ferrite sample, pure polypyrrole sample, FP-1(25% ferrite, 100% polypyrrole), FP-2 (50% ferrite, 100% polypyrrole), FP-3 (75% ferrite, 100% polypyrrole) and FP-4 (100% ferrite, 100% polypyrrole). These samples were analyzed to evaluate the surface morphology, structural properties as well as magnetic properties. The shape of hysteresis loop showed the ferromagnetic nature of the synthesized composites. On the basis of the results of current study, the samples with 25% and 50% ferrite ratio may be suitable for the hyperthermia.