• Frequency-dependent electrical behaviour of Na$_2$SiO$_3$: a brief report

• # Fulltext

https://www.ias.ac.in/article/fulltext/boms/043/0238

• # Keywords

Sintering; complex impedance; grain polarization; ac conductivity; dielectric dispersion.

• # Abstract

The present study reports the frequency-dependent electrical properties of sodium silicate (Na$_2$SiO$_3$) (SS) at different temperatures to understand the contribution of grain and grain boundary polarization to its electricalresponse at a lower frequency region. The low-frequency dielectric dispersion and non-Debye-type dielectric relaxation are attributed to polaron hopping that controls the complex impedance of SS. A single semi-circular arc in Nyquistplot indicates a dominance of grain boundary polarization in the relaxation mechanism. The analysis of frequency dependent ac conductivity in the studied temperature regime can be used to define the correlated barrier hoppingmodel.

• # Author Affiliations

1. Department of BS and HU (Physics), Asansol Engineering College, Asansol 713305, India

• # 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