Abstract
Abstract This paper investigates the dielectric properties and magnetic properties of epoxy composites with different amount of powdered iron phosphate glass (IPG) at 8.2 GHz to 12.4 GHz using microwave technique. IPG composed of 60P2O5-40Fe2O3 (mol%) was produced by conventional melt and quenching method and crushed into powder. The IPG powder was characterized using energy dispersive X-ray spectroscopy (EDS), particle size analyzer and powder X-ray diffraction (XRD). Different amount of IPG (10-70 wt%) were dispersed in the epoxy. The epoxy-IPG composites were characterized by their morphology, elemental composition and scattering parameters using scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and vector network analyzer (VNA), respectively. Reflection coefficient, |S11| increases whereas transmission coefficient, |S21| decreases with increasing IPG content in epoxy. Dielectric constant, er' of epoxy-IPG composites were found increased with the IPG content from 3.33 to 4.69.
Highlights
Phosphate glasses are chemical durable compared with most silicate and borosilicate glasses
Several works have been reported on the dielectric properties of conventional phosphate glasses doped with different transition elements, but there is not much information available on using microwave measurement technique to investigate the powdered iron phosphate glasses dispersed in a polymeric structure
The nominal composition of the prepared glass system was 60P2O5-40Fe2O3, 1.07 mol% of Al2O3 was detected by energy dispersive X-ray spectroscopy (EDS)
Summary
Phosphate glasses are chemical durable compared with most silicate and borosilicate glasses. The dielectric properties of phosphate glasses doped with iron oxides were investigated using microwave measurement technique [12]. Several works have been reported on the dielectric properties of conventional phosphate glasses doped with different transition elements, but there is not much information available on using microwave measurement technique to investigate the powdered iron phosphate glasses dispersed in a polymeric structure. The morphology, elemental composition and scattering parameters of the epoxy-IPG composites are investigated using scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and vector network analyzer (VNA), respectively. B. Epoxy-Iron Phosphate Glass Composite The epoxy-glass composite samples were prepared by curing the IPG powder in epoxy resin. Vector Network Analyzer (VNA; E5071C, Keysight) was used to measure the complex reflection coefficient, S11 and transmission coefficient, S21 of the epoxy-IPG composites. Where ko is the free space wavenumber, kc is the cut-off wavenumber and d is the thickness of the composite sample
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