S Noushin Ezzati Mirhashemi - Department of Chemistry, Saveh Branch, Islamic Azad University, Saveh, Iran
Mina Imani - Department of Chemistry, Iran University of Science and Technology, Narmak, Tehran, Iran
Mahboubeh Rabbani - Department of Chemistry, Iran University of Science and Technology, Narmak, Tehran, Iran
S.M.H Ezzati - Department of Chemistry, Saveh Branch, Islamic Azad University, Saveh, Iran

In this paper, conducting, magnetic polypyrrole/Ba0.5Sr0.5Fe11(Ni0.5Co0.5)O19 nanocomposite was fabricated successfullyvia sol-gel method and in situ polymerization.The products were characterized using SEM, FT-IR, EDX, DRS, XRDand VSM analyses. The DC conductivity measured by means of four-wire-technique and finally vector network analyzerwas employed to determine the ability of composites in microwave absorption at the range of 8-12 GHz (X-band). Thecoexistence of magnetic phase with conducting phase effects on enhancing the electromagnetic wave absorption, and aminimum reflection loss of −17.2 db at the frequency of 10.8 GHz was simply obtained. These results suggest that thesynthesized magnetic composites can be employed as effective microwave absorbers in various devices.

Electromagnetic shielding; Conducting polymers; M-type Ferrite