Reflection Losses Investigation of Ferrite Absorber Materials Doped with Carbon Nanotubes (CNT)

In this study, effect of Carbon Nanotubes (CNT) ferrite samples of Cu0.2Ni0.4Zn0.4Fe2O4, Mg0.95 Zn0.05TiO3 and Ca0.6La0.8TiO3 examined for the reflection loss investigation. In first step the mentioned ferrites were prepared by solid state reaction and thermal shock techniques. Then, samples with a mixture weight ratios of ferrite and carbon nanotubes of 98 to 2 percent were placed in an ultrasonic bath. In order to identify the phases of the synthesized samples, X-ray diffraction (XRD) was used. Ferrite grain sizes were characterized by field emission scanning electron microscopy (FESEM). To investigate the microwave electromagnetic region properties, the prepared nanocomposites were mixed with xylene solution and the reflection losses curves were plotted. The maximum reflection losses with appropriate broadband was obtained for Cu0.2Ni0.4Zn0.4Fe2O4 sample. Also, field emission scanning electron microscopy images reveals that the synthesized ferrite materials have nanoscale grain sizes.