Fabrication and characterization of xPrTiTaO6(1 − x)YTiNbO6 microwave ceramic composites

The xPrTiTaO6(1 − x)YTiNbO6 microwave dielectric ceramic composites are fabricated through the solid state ceramic route. The compositions are calcined in the temperature range 1200-1260 °C and sintered in the range 1350-1450 °C. The structure is analyzed using X-ray diffraction technique and confirmed using Raman spectroscopy. Surface morphology is studied using scanning electron microscopy. The variation of bulk density, quality factor (Quxf), temperature coefficient of resonant frequency (τf) and dielectric constant (ɛr) are correlated. Most of the samples have high ɛr, high Quxf and low τf and hence are suitable for dielectric resonator applications.