The Effect of A-Site Vacancies on Cell Volume and Tolerance Factor of Perovskites

Rick Ubic, Kevin Tolman, Kokfoong Chan, Nicole Lundy, Steven Letourneau, Waltraud M Kriven

Research output: Chapter in Book/Report/Conference proceedingChapter

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.

Original languageEnglish (US)
Title of host publicationCeramic Transactions
PublisherWiley
Pages331-336
Number of pages6
Volume240
ISBN (Electronic)9781118744109
ISBN (Print)9781118744093
DOIs
StatePublished - Jul 1 2013

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

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