Abstract
The dielectric and piezoelectric properties of (1 − x)[(Pb0.988La0.012)(Zr0.53Ti0.47)0.997O3]–x[Pb0.557Ba0.38La0.022Bi0.02Nb2O6] composite system consisting of both perovskite tetragonal (4 mm) and tungsten bronze orthorhombic (m2 m) phases, prepared in situ by mechanical activation method are presented and discussed in relation to x (PBLBiN) variation. The crystal structure and morphology of the composites were examined with X-ray diffraction and scanning and transmission electron microscopes. Scanning electron micrographs showed structural homogeneity. Dielectric and piezoelectric properties were studied as a function of x to characterize electrical properties of composites. The presence of two trivalent ions (La3+ and Bi3+) in x resulted in high dielectric and piezoelectric properties. The possible mechanisms of mechanical activation technique of (1 − x)PLZT–xPBLBiN nanoceramic composite system are discussed. The optimum dielectric and piezoelectric properties were found in x = 0.6 in (1 − x)PLZT–xPBLBiN nanoceramic composite system which could be ideal for electromechanical and energy harvesting applications.
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Acknowledgments
This work has been supported by the research grant funded by Fondecyt (Fondo Nacional de Desarrollo Científico y Tecnológico, Chile) through project No. 1080635. The authors would like to thank University of Concepcion, Chile and Andhra University, India for their collaboration and support extended. The authors would also like to thank Mr. Ranganathan, Mr. Krishnamurthy and Ms. C. N. Devi for their technical assistance and valuable suggestions extended during this work.
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Koduri, R., Lopez, M. & Kemburu, C. Structural and functional properties of (1 − x)PLZT–xPBLBiN nanoceramic composites by high-energy mechanical activation technique. J Mater Sci: Mater Electron 22, 437–443 (2011). https://doi.org/10.1007/s10854-010-0156-1
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DOI: https://doi.org/10.1007/s10854-010-0156-1