Authors: C Behera R N P Choudhary P R Das
Publish Date: 2016/10/13
Volume: 28, Issue: 3, Pages: 2586-2597
Abstract
Thin films of some polymer–ceramics multiferroic nanocomposites in 0–3 connectivity of compositions 1 − xPVDF–xBi05Ba025Sr025Fe05Ti05O3 x = 00501015 have been prepared using a standard solution casting method The basic structure and surface morphology of the materials were studied using Xray diffraction and scanning electron microscopy technique respectively Structural investigation confirms the presence of polymeric electro active βphase of matrix PVDF and nano filler perovskite phase of the incorporated nanoceramics The high resolution transmission electron micrograph of the prepared nanoceramic thin film composite has shown distinct and uniformly distributed particles with less agglomeration This has been observed in SEM micrographs also The flexible nanocomposites fabricated with polymer PVDF bismuth ferrite BiFeO3 and ferroelectric BST exhibit high dielectric constant and low tangent loss The electric response investigated by impedance spectroscopy technique in terms of electric circuit has provided some interesting results on contributions of grain and grain boundary in the restive characteristics of the composites The study of ac conductivity as a function of frequency obeys Jonscher’s power law The experimentally obtained first order magnetoelectric coefficient αME is found to encouraging for multifunctional application The improved conductivity and dielectric properties suggest some promising applications in the embedded capacitorsThe authors gratefully acknowledge the grant received from DRDO Grant Number ERIP/ER/1102202/M/01/1438 dated 25/07/2012 Government of India to carry out this work The authors also grateful to CRF IIT Kharagpur and Dr Ashok Kumar Senior Scientist of NPL New Delhi for providing some experimental facilities
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