Abstract
A ceramic composite electronic sample (Sn0·6Ti0.4)O2 is processed through solid-state reaction approach. Crystallographic, morphological, and different temperature-frequency-dependent electrical characteristics have been examined. The formation of a crystallographic polycrystalline tetragonal structure has been ensured through X-Ray Diffraction. The hydrophilic porous nature with uniform distribution of grains is ascertained through SEM. The electrical parameters are evaluated across broad temperatures and frequency ranges of 35 °C–450 °C and 1 kHz - 1 MHz respectively. A superior dielectric permittivity (εr: 44,730), low loss tangent (tanδ: 11.074) (for 400 °C, frequency 1 kHz) with enhanced capacitive behaviour are depicted. The conductivity spectrum reveals the nature and mechanism of conduction. The impedance analyzer divulges the realization of the grain and grain boundary effect on the electrical characteristics. The Non-Debye relaxation behaviour is substantiated by an electric modulus analysis. The comprehensive investigations illustrate this component as a capacitive electronic element for humidity sensor applications.
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