Abstract
Nanocrystalline MgCuZnFe 2 O 4 and BaTiO 3 powders were synthesized using the microwave hydrothermal (M-H) method at 160°C for 45 min for the preparation of x BaTiO 3+(1-x) MgCuZnFe 2 O 4. The nanopowders were characterized using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The particle size of the powders was found to be ~30 and ~40 nm for MgCuZnFe 2 O 4 and BaTiO 3, respectively. The nanopowders were mixed at different weight percentages and densified at 910°C for 30 min using the microwave sintering method. The sintered composites were characterized using XRD and scanning electron microscopy (SEM). The density of the composites varies 93–96% of theoretical density. The density of the present composites increases as the weight percentage of BaTiO 3 content increases. The frequency variation of dielectric constant (ε), dissipation factor (D), initial permeability (μi) and quality factor (Q) were measured from 1 kHz to 1 MHz.
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