Advertisement

Journal of Materials Science

, Volume 31, Issue 11, pp 2925–2930 | Cite as

Dielectric behaviour of thin films of β-PVDF/PZT and β-PVDF/BaTiO3 composites

  • R. GregorioJr.
  • M. Cestari
  • F. E. Bernardino
Papers

Abstract

Thin films of the composites formed between poly(vinylidene fluoride) (PVDF) and lead zirconium titanate (PZT) and also barium titanate with 0–3 connectivity, have been obtained by dispersion of the ceramic powder in a solution of PVDF in dimethylacetamide DMA. Evaporation of the solvent at 65 °C allowed crystallization of PVDF predominantly in the polar β phase, regardless of the amount of PZT or BaTiO3 powder added upto 40 vol %. The relative permittivity and loss index values were determined for the pure components and for the composites with different ceramic contents, in the frequency range of 100 Hz to 13 MHz. An increase in PZT or BaTiO3 content resulted in an increase in the relative permittivity of the composites, and the experimental results are shown to be in good agreement with those calculated from the theoretical expression of Yamada et al. [1]. The de electrical conductivity of composites with different compositions was also determined.

Keywords

Zirconium PVDF BaTiO3 Relative Permittivity Pure Component 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    T. Yamada, T. Ueda and T. Kitayama, J. Appl. Phys. 53 (1982) 4328.Google Scholar
  2. 2.
    C. Muralidhar and P. K. C. Pillai, IEEE Trans. Elec. Insul. EI-21 (1986) 501.Google Scholar
  3. 3.
    D. Sinha, C. Muralidhar and P. K. C. Pillai, in Proceedings of the 2nd International Conference on Conduction and Breakdown in Solid Dielectrics, Germany, July 1986, p. 827.Google Scholar
  4. 4.
    C. Muralidhar and P. K. C. Pillai, J. Mater. Sci. Lett. 6 (1987) 346.Google Scholar
  5. 5.
    D. Sinha, N. Shroff and P. K. C. Pillai, Ferroelectrics 103 (1990) 49.Google Scholar
  6. 6.
    M. J. Abdullah and D. K. Das-Gupta, IEEE Trans. Elect. Insut. 25 (1990) 605.Google Scholar
  7. 7.
    Y. Daben, Ferroelectrics 101 (1990) 291.Google Scholar
  8. 8.
    A. E. Sergeeva, S. N. Fedosov and P. Pissis, in Proceedings of the 8th International Symposium on Electrets, Paris, France, Sept. 1994, edited by J. Lewiner (IEE Dielectric Elect. Insul. Soc., Piscataway-NJ, 1994) p. 748.Google Scholar
  9. 9.
    A. E. Sergeeva, S. N. Fedosov, J. Vanderschueren and A. Thielen, ibid. p. 742.Google Scholar
  10. 10.
    B. Wei and Y. Daben, Ferroelectrics 157 (1994) 427.Google Scholar
  11. 11.
    H. Xuexiong, X. Yangzi and L. Jingde, in Proceedings of the 8th International Symposium on Electrets, Paris, France, Sept. 1994, edited by J. Lewiner (IEE Dielectric Elect. Insul. Soc., Piscataway-NJ, 1994) p. 760.Google Scholar
  12. 12.
    R. E. Newnham, D. P. Skinner and L.E. Cross, Mater. Res. Bull. 13 (1978) 525.Google Scholar
  13. 13.
    R. Gregorio Jr. and M. Cestari, J. Polym. Sci. B32 (1994) 859.Google Scholar
  14. 14.
    J. A. Mendonça and R. Gregorio Jr., in Proceedings of the 2nd Ibero-American Polymer Symposium, 4th Latin-American Polymer Symposium and 6th International Macromolecular Colloquim, Brazil, Sept. 1994, p. 846.Google Scholar

Copyright information

© Chapman & Hall 1996

Authors and Affiliations

  • R. GregorioJr.
    • 1
  • M. Cestari
    • 1
  • F. E. Bernardino
    • 1
  1. 1.Department of Materials EngineeringFederal University of São CarlosSão Carlos, SPBrazil

Personalised recommendations