Electrical Properties Of Barium Titanate Dispersed Silver Sulphate

Department of Physics, Shri Shivaji Science College, Congress Nagar, Nagpur, India 440012

Adv. Mater. Lett., 2013, Current Issue, 4 (4), pp 300-309

DOI: 10.5185/amlett.2012.8404

Publication Date (Web): Feb 17, 2013

Copyright © IAAM-VBRI Press

E-mail: swanwane2000@yahoo.com

Abstract

Composite materials which are heterogeneous mixtures of two or more solid phases offer value added properties for device applications. When ion conducting Ag₂SO₄ is dispersed with insulating BaTiO₃, enhanced electrical properties are observed along with improved surface morphology. The electrical properties have been derived from the Complex Impedance Spectroscopic studies. Arrhenius Plot, Concentration and Temperature dependent conductivity and activation energy have also been studied. The ionic transference number of the composite system remains unchanged on dispersion thereby retaining its category as Solid Ionic Conductor (SIC). Moreover, 30 Wt% BaTiO₃ dispersed in Ag₂SO₄ offers promisingly enhanced ionic conductivity and reduced activation energy of ion migration. This material has further scope for its utilization as a silver ion conductor in electrochemical applications like solid state batteries, gas sensors etc. The results obtained fit well in the established theories of composites.

Keywords

Barium titanate dispersed silver sulphate, fast ionic conductors, solid electrolyte, silver ion conductor, heterogeneous mixtures.