Dielectric properties of (1‑x) PbMg1/3Nb2/3 O3 ‑ (x) AlBiO3 ceramic nanomaterials

Abstract

Dielectric materials are electrical insulators that can be polarized by temperature, pressure, and applied electric field. Dielectric typically means materials with a high polarisability. In this study, temperature and frequency effects on lead magnesium niobate – Aluminium Bismuthate (1x) PbMg1/3Nb2/3 O3 (x) AlBiO3 solid solution ceramics with the compositions (x = 0.1, 0.2, and 0.3 were discussed. The ceramic composites were synthesized by the solid-state reaction method. The temperature and frequency-dependent dielectric properties were studied using the complex impedance spectroscopic method at various temperatures and applied frequencies. Real and imaginary parts of the dielectric constants were determined as a function of temperature and frequency. The dielectric constant of (1x) PbMg1/3Nb2/3 O3 (x) AlBiO3 ceramics, increased with increasing the temperature and AlBiO3 concentrations. The maximum value of dielectric constant (Tm) was obtained at 86oC with the frequency of 1kHz at the composition x = 0.3. The systematic analysis of dielectric property suggested that the (1x) PbMg1/3Nb2/3 O3 (x) AlBiO3 with x = 0.1, 0.2, and 0.3 ceramics are anticipated as one of the useful low lead electronic materials. Furthermore, the dielectric constant of the composites can be varied by their composition, temperature, and ac-biased field.