Abstract
This study investigates the impact of Cu-Ni substitution on the structural, magnetic, and microwave permeability properties of Co2Y barium hexaferrite. Samples were synthesized with varying Cu-Ni concentrations using the sol–gel method. Various techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), vibrating sample magnetometry (VSM), and vector network analyzer (VNA) were employed to examine the samples. The complex permeability and permittivity spectra were analyzed in the frequency range of 100 MHz to 18 GHz. Numerical fitting of the data revealed that spin resonance plays a significant role in the dispersion of all samples. The resonance frequency decreased as the Ni-Cu concentration increased. The anisotropy fields (Hθ,Hϕ) were evaluated, and it was observed that Hθ had better agreement with experimental results than Hϕ. Furthermore, microwave absorption properties were investigated using the transmission line theory, indicating a shift to lower frequencies for regions with significant absorption with increased substitution.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
