Aging of Barium Titanate and Lead Zirconate-Titanate Ferroelectric Ceramics

Abstract

The report reviews the present knowledge of the aging process in barium titanate and lead zirconate-titanate ferroelectric ceramics. By 'aging' is meant the passive change in the mechanical and electrical properties of a ferroelectric with time. Experimental data show that these constants vary linearly with the logarithm of time. The Smith, Street and Woolley, and Plessner theories for this logarithmic dependence are revised to remove some of the obscurity in the usual derivation. The experimental evidence of Ikegami and Ueda and of Bradt and Ansell, which is described in some detail, supports the hypothesis that aging is associated with the relief of internal stress through the formation of 90 deg-domains.

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Document Details

Document Type
Technical Report
Publication Date
Oct 15, 1970
Accession Number
AD0715624

Entities

People

  • Jules Delaunay
  • Paul L. Smith

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Barium Titanates
  • Ceramic Materials
  • Conductivity
  • Crystals
  • Diagrams
  • Dielectric Permittivity
  • Dielectric Properties
  • Dielectrics
  • Domain Walls
  • Lead Titanates
  • Lead Zirconate Titanates
  • Phase Diagrams
  • Phase Transformations
  • Semiconductors
  • Solid Solutions
  • Titanates
  • Transition Temperature

Readers

  • Approximation Theory.
  • Materials Science and Engineering.
  • Theoretical Analysis.