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Effects of Low Iron Doping on Dielectric and A.C. Conductivity in Layered Sodium Tri-Titanate

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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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Keywords: ALKALI TITANATES; COMPLEX PLANE PLOT; ELECTRICAL CONDUCTIVITY; LOSS TANGENT; RELATIVE PERMITTIVITY

Document Type: Research Article

Publication date: December 1, 2013

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  • Journal of Advanced Physics is an interdisciplinary peer-reviewed journal consolidating research activities in all experimental and theoretical aspects of advanced physics. The journal aims in publishing articles of novel and frontier physics that merit the attention and interest of the whole physics community. JAP publishes review articles, full research articles, short communications of important new scientific and technological findings in all latest research aspects of physics.
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