Effects of Low Iron Doping on Dielectric and A.C. Conductivity in Layered Sodium Tri-Titanate
The temperature dependence of loss tangent (tan δ) and relative permittivity (ε′) at fixed frequencies from 60 kHz to 1 MHz in the temperature range 373–873 K have been reported for 0.01 molar% iron doped layered Na2Ti3O7 ceramic. The frequency dependence of tan δ and ε′ at fixed temperatures have also reported for the same material. From the dielectric relaxation studies it is found that the complex plane plot follows a Cole–Cole type distribution at lower temperatures. The ln (σ ac T) versus 1000/T plots exhibits the normal behavior up to 573 K and the unusual complex variation at higher temperatures. Various conduction mechanisms in different temperature regions have been proposed.
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Document Type: Research Article
Publication date: December 1, 2013
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