Dielectric and electrical properties of 0.5(BiGd0.05Fe0.95O3)-0.5(PbZrO3) composite

The 0.5(BiGd 0.05 Fe 0.95 O 3 )-0.5(PbZrO 3 ) composite was synthesized by means of a high temperature solid-state reaction technique using high purity ingredients. Preliminary X-ray structural analysis confirms the formation of the composite. The dielectric constant and loss tangent have been studi...

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Bibliographic Details
Published inMaterials science--Poland Vol. 32; no. 1; pp. 59 - 65
Main Authors Satpathy, S. K., Mohanty, N. K., Behera, A. K., Behera, Banarji
Format Journal Article
LanguageEnglish
Published Heidelberg Versita 2014
Subjects
Chemistry and Materials Science
dielectric constant
electrical conductivity
impedance
Materials Science
Research Article
XRD
impedance
XRD
electrical conductivity
dielectric constant
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Summary:The 0.5(BiGd 0.05 Fe 0.95 O 3 )-0.5(PbZrO 3 ) composite was synthesized by means of a high temperature solid-state reaction technique using high purity ingredients. Preliminary X-ray structural analysis confirms the formation of the composite. The dielectric constant and loss tangent have been studied. The impedance parameters have been measured using an impedance analyzer in a wide range of frequency (10 2 –10 6 Hz) at different temperatures. The Nyquist plot suggests the contribution of bulk effect only and the bulk resistance decreases with a rise in temperature. Electrical impedance confirms the presence of grain effect and hopping mechanism in the electrical transport of the material. The dc conductivity increases with a rise of temperature. The frequency variation of ac conductivity shows that the compound obeys Jonscher’s universal power law and from Jonscher’s power law fit confirms the Small Polaron (SP) tunneling effect. Temperature dependence of dc and ac conductivity indicates that electrical conduction in the material is a thermally activated process.
ISSN:2083-1331
2083-134X
DOI:10.2478/s13536-013-0155-z