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Article
Dielectric and Structural Characteristics of Perovskites and Related Materials as a Function of Tolerance Factor
Ferroelectrics (1999)
  • I. M. Reaney, University of Sheffield
  • Rick Ubic, Boise State University
Abstract

The temperature coefficient of the dielectric permittivity (τε) and resonant frequency (τf) of perovskites and related materials is important in the application of these ceramics to microwave filters and resonators. Recent work has directly related changes in τε, and therefore τf, to the onset of octahedral tilting in Ba- and Sr-based complex perovskites. Whether a compound is tilted at room temperature or not depends largely on the tolerance factor, t. The relationship between t and τε is reviewed in perovskites and the effect of changing tolerance factor on τε in the perovskite-related solid solution series Ba6-3xNd8+2xTi18O54 is discussed. Transmission electron microscopy is used to demonstrate examples of phase transformations in the above systems

Keywords
  • temperature coefficient of dielectric permittivity,
  • resonators,
  • perovskites,
  • transmission electron microscopy,
  • tolerance factor
Publication Date
1999
Citation Information
I. M. Reaney and Rick Ubic. "Dielectric and Structural Characteristics of Perovskites and Related Materials as a Function of Tolerance Factor" Ferroelectrics Vol. 228 Iss. 1-4 (1999)
Available at: http://works.bepress.com/rick_ubic/34/