Dielectric and Conductive Properties of ZnMoO4-TiO2: Exploring High-Temperature Performance and Application Potential

Abstract

Considering ceramic engineering advances, this study explores ZnMoO₄-TiO₂ electronic composite synthesis. This is synthesized using a solid-state mixed oxide reaction technique. Sample is calcined at 780 °C and sintered at 810 °C. The X-ray diffraction pattern of the sample structure matches with the JCPDS reference codes 98–000-4862 and 98–002-2025. Ambient temperature SEM and EDAX reveal the material’s structure and composition. Compound microstructure exhibits continuous grain dispersion and unique porosity. Dielectric, loss tangent, and conductivity were comprehensively analyzed from 30 to 450 °C and 1 kilohertz (kHz) to 1 megahertz (MHz). At temperatures above 300 °C, the dielectric constant increases. The activation energy for electrical conductivity exhibits a range of values, specifically from 0.82 to 1.92 eV at various frequencies, when the temperature increases from 400 to 450 °C. UV–visible spectroscopy determined the band gap energy of 3.12 eV, with absorption peaks at 205 and 390 nm. Based on these findings, ZnMoO₄-TiO₂ may be suitable for humidity sensors and other electrical and electronic devices.