Wide-domain controlled electromagnetic and microwave absorption properties of PANI/Ni_0.5Zn_0.5Fe₂O₄ composites

Microwave absorption materials such as traditional ferrite have received increasing attention owing to wide applications in national defense, electronics industry and physical electromagnetic protection. However, the insufficient absorption intensity coupled with the large application thickness have limited the practical application of the traditional materials in absorbing area. To address such issues, the PANI/Ni_0.5Zn_0.5Fe₂O₄ nanoparticles were fabricated, and the microscopic morphologies, x-ray diffraction (XRD) spectras, dielectric parameters and microwave absorption property of the as-prepared samples were charaterizated. The qualified absorption bandwidth (5.1 GHz) was remarkably broadened at a small thickness (1.78 mm), suggesting a novel platform for designing tunable qualified bandwidth lightweight absorbing materials. (paper)