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Structural and electrical properties of BiFeO3-Pb(ZrTi)O3 composites

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Abstract

The polycrystalline (Bi1-xPbx)(Fe1-xZr0.6xTi0.4x)O3 (x=0.15, 0.25, 0.40, 0.50) (BPFZT) nanoceramic composites were synthesized using mechanical activation and solid-state reaction techniques. The formation of single-phase compounds with 100% solubility of BiFeO3 and Pb(Zr0.6Ti0.4)O3 was confirmed by an X-ray diffraction (XRD) technique. Detailed structural analysis of the fabricated BPFZT composites suggests the formation of tetragonal structure (i.e., distorted perovskite) for all composition. The dielectric constant and loss-tangent of the BPFZT composites decrease on increasing frequency and temperature. It has also been observed that the leakage current and loss-tangent are reduced by increasing the contents of PZT in the BPFZT composites, and hence they may be considered useful for some applications. The values of activation energies and the nature of variation of conductivity with temperature and frequencies suggest that the space charge and oxygen ion vacancies play a significant role in the conduction process.

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Authors and Affiliations

  1. Department of Physics, University of Puerto Rico, San Juan, Puerto Rico, 00931-3343

    R.N.P. Choudhary, K. Perez, P. Bhattacharya & R.S. Katiyar

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  1. R.N.P. Choudhary
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  2. K. Perez
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  3. P. Bhattacharya
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  4. R.S. Katiyar
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Correspondence to R.N.P. Choudhary.

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PACS

61.10.Nz; 77.22.Ch; 77.84.Lf; 81.20.Ev

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Choudhary, R., Perez, K., Bhattacharya, P. et al. Structural and electrical properties of BiFeO3-Pb(ZrTi)O3 composites. Appl. Phys. A 86, 131–138 (2007). https://doi.org/10.1007/s00339-006-3725-7

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  • DOI: https://doi.org/10.1007/s00339-006-3725-7

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