Title of article
Conductivity investigations of Aurivillius-type Bi2.5Gd1.5Ti3O12 ceramics
Author/Authors
Masiukait?، نويسنده , , E. and Banys، نويسنده , , J. and Sobiestianskas، نويسنده , , R. and Ramoska، نويسنده , , T. and Khomchenko، نويسنده , , V.A. and Kiselev، نويسنده , , D.A.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2011
Pages
3
From page
50
To page
52
Abstract
The aim of the present work is to investigate newly sintered ceramics of gadolinium-substituted Aurivillius-type bismuth titanate, Bi2.5Gd1.5Ti3O12, by the impedance spectroscopy. The measurements were performed as a function of both frequency and temperature in the frequency range 20 Hz–1 MHz and in the temperature range 300 K–1050 K. The electrical conductivity and dielectric relaxation have been analyzed in terms of specific resistivity and electrical modulus. The onset of the ionic conductivity in the ceramic appears above the phase transition temperature, T0 = 468 K. Activation energy for the conductivity was found to be ∆EA = 0.98 eV, while conductivity in grains has ∆Eg = 0.93 eV.
Keywords
ionic conductivity , Aurivillius structure , Electrical modulus , Ferroelectrics
Journal title
Solid State Ionics
Serial Year
2011
Journal title
Solid State Ionics
Record number
1710157
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