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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 Kriven
  • Boise State University
  • University of Illinois at Urbana-Champaign

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

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 languageAmerican English
Title of host publicationProcessing and Properties of Advanced Ceramics and Composites V
Subtitle of host publicationCeramic Transactions
Pages331-336
Number of pages6
Volume240
ISBN (Electronic)9781118744109
DOIs
StatePublished - 2013
EventProcessing and Properties of Advanced Ceramics and Composites V - Materials Science and Technology 2012 Conference, MS and T 2012 - Pittsburgh, PA, United States
Duration: 7 Oct 201212 Oct 2012

Publication series

NameCeramic Transactions
Volume240
ISSN (Print)1042-1122

Conference

ConferenceProcessing and Properties of Advanced Ceramics and Composites V - Materials Science and Technology 2012 Conference, MS and T 2012
Country/TerritoryUnited States
CityPittsburgh, PA
Period7/10/1212/10/12

Keywords

  • perovskites
  • pseudocubic lattice constant
  • electroceramics
  • superconductors
  • microwave applications

EGS Disciplines

  • Materials Science and Engineering

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