Revista de Ciências e Engenharia de Materiais

Sintering Processes and Dielectric Properties of Ceramic Material (Ba_0.4Ca_0.6) Ti₄O₉

Abstract

Asad Ali*, Abid Zaman, Sarir Uddin and Zafar Iqbal

Dielectric properties of (Ba_0.4Ca_0.6) Ti₄O₉ ceramic material prepared by mixed oxide solid state route were studied. X-Ray Diffraction (XRD) showed that the calcined powder of (Ba_0.4Ca_0.6) Ti₄O₉ at 900°C crystalizes in the phase of complex peroveskite type. Dielectric properties measurement was carried out by LCR meter at the range of (1 MHz to 100 MHz) and (1 GHz to 2 GHz) frequencies. The εr value of (Ba _0.4 Ca_0.6 )Ti₄O₉ sintered ceramic sample increased with increasing frequency. In the present work, a controlled mixed oxide solid state processing route was used to prepared microwave dielectric material (Ba_0.4Ca_0.6) Ti₄O₉ and microwave dielectric properties were measured at relatively lower and higher frequencies.