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Contribution to Book
The Effect of A-Site Vacancies on Cell Volume and Tolerance Factor of Perovskites
Processing and Properties of Advanced Ceramics and Composites V: Ceramic Transactions (2013)
  • Rick Ubic, Boise State University
  • Kevin Tolman, Boise State University
  • Kokfoong Chan, Boise State University
  • Nicole Lundy, Boise State University
  • Steve Letourneau, University of Illinois at Urbana-Champaign
  • Waltraud Kriven, University of Illinois at Urbana-Champaign
Abstract

Point defects like vacancies can have a profound effect on the structure of perovskite ceramics, but the exact mechanisms by which they do this are unclear. A predictive model for the pseudocubic lattice constant of perovskites, based solely on published ionic radii data, has been developed and adapted as a model for tolerance factor. These models more consistently predict both pseudocubic lattice constant, hence cell volume, and the tolerance factor than existing methods, thus also more accurately modeling the temperature coefficient of resonant frequency (TCF). The relationship between tolerance factor and TCF is revisited.

Keywords
  • perovskites,
  • pseudocubic lattice constant,
  • electroceramics,
  • superconductors,
  • microwave applications
Publication Date
June 10, 2013
Editor
Narottam P. Bansal ... [et al.]
Publisher
Wiley
Citation Information
Rick Ubic, Kevin Tolman, Kokfoong Chan, Nicole Lundy, et al.. "The Effect of A-Site Vacancies on Cell Volume and Tolerance Factor of Perovskites" Hoboken, New JerseyProcessing and Properties of Advanced Ceramics and Composites V: Ceramic Transactions Vol. 240 (2013)
Available at: http://works.bepress.com/rick_ubic/72/