AC conductivity and dielectric behaviour of NaNbO3 ceramic polymer composites

The sodium niobate (NN) polymer composites of different compositions were prepared using solution casting method. The prepared polymer composite film samples were characterized by XRD to study the microstructure of the composites. The SEM studies on composite films revealed a better dispersion of ce...

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Bibliographic Details
Main Authors: Beena, P., Raju, R.K., Jayanna, H.S.
Format: Conference Proceeding
Language:English
Subjects:
Conductivity
Dielectric
Impedance
SEM
Sodium niobate
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Summary:The sodium niobate (NN) polymer composites of different compositions were prepared using solution casting method. The prepared polymer composite film samples were characterized by XRD to study the microstructure of the composites. The SEM studies on composite films revealed a better dispersion of ceramic crystallites in the host matrix. The dielectric constant (∊r) and the ac conductivity of the composites with different concentrations at various frequencies (100 Hz–5 MHz) were investigated. The results showed an increment of dielectric constant of NN-PVA (polyvinyl alcohol) composites with ceramic concentration and ac conductivity of the sodium niobate composites increased with increasing frequency. The complex impedance of the composites were also calculated to understand the dielectric behaviour of the composites.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2020.07.488