Abstract
The Magnesium substituted barium hexaferrites were prepared by sol-gel auto-combustion method according to the molecular formula BaMgxFe(12−x)O19 (x=0, 0.5 and 1). The crystalline structure, morphology, complex permittivity, and complex permeability were measured with X-ray Diffraction (XRD), Field Emission-Scanning Electron Microscopy (FE-SEM) and Vector Network Analyzer (VNA) respectively. From XRD study, the formations of single phase ultrafine particles have been confirmed. The XRD analysis showed that variation in lattice parameter with change in x value. The FE-SEM study shows that synthesized particles have hexagonal morphology. The minimum reflection loss of -24.86 dB at 9.04 GHz was found with the increase in band width at x=1, which suits its application as RADAR absorbing materials.
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