Electromagnetic wave absorption of polymeric nanocomposites based on ferrite with a spinel and hexagonal crystal structure

摘要: Abstract We have investigated composites designed for microwave absorption based on magnetic filler, composed of phases within the SrO–Fe 2 O 3 system, embedded in a polyphenylene sulfide matrix with concentration ratio 80:20 by weight. The formation nanosized particles SrFe 12 19 and Fe 4 , as principal was achieved via co-precipitation Sr 2+ /Fe 3+ ions using different molar ratios. various precursors obtained were calcined between 600 °C 900 °C air. electromagnetic parameters measured vector network analyzer at 400 MHz to 32 GHz. results show that composite complex filler comprising nanoparticles two magnetically diverse phases, i.e., spinel phase wave absorber lower GHz range hexagonal operating higher range, above 32 GHz, an broad can be prepared.