James, AR and Balaji, S and Krupanidhi, SB (1999) Impedance-fatigue correlated studies on SrBi2Ta2O9. In: Materials Science and Engineering, 64 (3). pp. 149-156.
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Ceramic samples of SrBi2Ta2O9 (SBT) were prepared by the solid state reaction method with a view to study their electrical properties. Reasons as to why SBT shows better fatigue endurance than conventional perovskites like Pb(Zr, Ti)O-3 are looked into. Complex impedance spectroscopy (CIS) was used as a tool to do so. CIS data was acquired over the temperature range from room temperature to 500 degrees C over a wide range of frequencies. Electrical conductivity data indicates that the conductivity in SBT is essentially due to oxygen vacancies and the activation energy for conduction in the high temperature region was found to be 0.95 eV. CIS was used to separate out the bulk and the interfacial contributions to complex impedance.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Elsevier Science.|
|Keywords:||Electronic materials;Impedance spectroscopy;Electrical properties;Ferroelectricity.|
|Department/Centre:||Division of Chemical Sciences > Materials Research Centre|
|Date Deposited:||17 Aug 2009 08:32|
|Last Modified:||19 Sep 2010 05:30|
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