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Journal of Radioanalytical and Nuclear Chemistry

, Volume 211, Issue 1, pp 255–260 | Cite as

Positron lifetime study of the ferroelectric BaTiO3 in electric field

  • K. Süvegh
  • A. Domj'an
  • R. Tarsoly
  • A. Vértes
Contributed Papers

Abstract

BaTiO3, was studied by positron lifetime spectroscopy in static electric fioeld. The strength of the field was varied from 0 up to 104 V/cm. Two characteristic points were found at 4500 V/cm and at 8500 V/cm. These field strengths were related to subsequent ordering processes of the crystal. Additional temperaturee dependent measurements were perforrmed in the 70–310 range to confirn the interopretaion of the two positron lifetimes. The two expected phase transitions were observed and these measurements showd that positron are trapped by Ba vacancies.

Keywords

Spectroscopy Physical Chemistry Phase Transition Inorganic Chemistry Field Strength 
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.

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References

  1. 1.
    G. SHIRANE, R. PEPINSKY, B. C. FRASER, Acta Crystallorg., 9 (1956) 131.Google Scholar
  2. 2.
    R. E. COHEN, Nature, 358 (1992) 136.Google Scholar
  3. 3.
    W. J. MERZ, Phys. Rev., 76 (1949) 1221.Google Scholar
  4. 4.
    R. COMES, M. LAMBERT, A. GUINIER, Acta Crystallogr., A26 (1970) 244.Google Scholar
  5. 5.
    R. C. MILLER, A. SAVAGE, Phys. Rev., 115 (1959) 1176.Google Scholar
  6. 6.
    P. KIRKEGAARD, M. ELDRUP, O. E. MOGENSEN, N. J. PEDERSEN, Comput. Phys Commun., 23 (1981) 307.Google Scholar
  7. 7.
    A. SHUKLA, L. HOFFMANN, A. A. MANUEL, B. BARBIELLINI, M. PEER, E. WALKER, Mat. Sci. Forum, 175–178 (1995) 929.Google Scholar
  8. 8.
    D. SINGH, W. E. PICKETT, R. E. COHEN, H. KRAKAUER, S. BERKO, Phys. Rev., B 39 (1989) 9667.Google Scholar
  9. 9.
    Y. J. HE, J. Chinese Ceram. Soc., 12 (1984) 12.Google Scholar

Copyright information

© Akadémiai Kiadó 1996

Authors and Affiliations

  • K. Süvegh
    • 1
  • A. Domj'an
    • 1
  • R. Tarsoly
    • 1
  • A. Vértes
    • 1
  1. 1.Department of Nuclear ChemistryEötvös Loránd UniversityBudapest(Hungary)

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