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Variation of Dielectric Constant and Spontaneous Strain With Density in Polycrystalline Barium Titanate

  • H. H. Stadelmaier
  • S. W. Derbyshire
Conference paper
Part of the Materials Science Research book series (MSR)

Abstract

A simple model of a porous ferroelectric explains the change of the dielectric constant with density. This model agrees well with the experimental results. Certain barium titanate powders show a low spontaneous strain so that their structure at room temperature appears to be cubic rather than tetragonal. Compacts prepared from such a powder exhibit an increase in spontaneous strain with increasing density, and this is explained with a model that is based on Devonshire’s thermodynamic theory.

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References

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    H.H. Stadelmaier and S.W. Derbyshire, Materials Science Research, Vol. 1, Plenum Press, (New York), 1963, p. 57.CrossRefGoogle Scholar
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    G. Borelius, Handbuch der Metallphysik, Vol. 1, Akad. Verlagsges., (Leipzig), 1937.Google Scholar
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    A. F. Devonshire, Advan. Phys. 3: 85 (1954).CrossRefGoogle Scholar
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Copyright information

© Springer Science+Business Media New York 1966

Authors and Affiliations

  • H. H. Stadelmaier
    • 1
  • S. W. Derbyshire
    • 1
  1. 1.North Carolina State UniversityRaleighUSA

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