• Vijendra Lingwal

Articles written in Bulletin of Materials Science

• Dielectric properties of Na1–𝑥K$_x$NbO3 in orthorhombic phase

Pellets of ceramic, Na1–𝑥K𝑥NbO3 (𝑥 = 0, 0.2 and 0.5), were prepared by conventional solid-state reaction method. Prepared samples were characterized using XRD and SEM. The frequency and temperature variation of dielectric constant, loss tangent and dielectric conductivity of prepared samples were measured in the frequency range from 10 KHz–1 MHz, and in the temperature range from 50–250°C for 𝑥 = 0.2 and 0.5,and between 50 and 480°C for 𝑥 = 0 compositions. It was observed that the dielectric constant and loss tangent decrease, and conductivity increases with increasing frequency. Near the transition temperature the material shows anomalous behaviour for the observed properties, and the peaks of dielectric constant and loss tangent were observed shifting towards lower temperature with increasing frequency.

• # Bulletin of Materials Science

Volume 44, 2021
All articles
Continuous Article Publishing mode

• # Dr Shanti Swarup Bhatnagar for Science and Technology

Posted on October 12, 2020

Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020