Thermochemistry of complex perovskites

Research output: Chapter in Book/Report/Conference proceedingConference contribution

20 Scopus citations


High temperature oxide melt solution calorimetry is a versatile technique for studying the energetics of formation, solid solution mixing, phase transition, and order/disorder in complex perovskites. The methodology is described and examples of both present and possible future applications given. The stability of the perovskite structure diminishes as the tolerance factor deviates from unity and increases as the size (and basicity) of the A-site cation increases. High pressure lithium niobate and perovskite structures are formed for a number of silicates, gerrnanates, and titanates. Their energetics become less favorable as the A-site cation radius decreases. Ordered double perovskites are favored at high pressure. Such materials as well as the vacancy-ordered brownmillerite structures are only marginally energetically stable with respect to end-member perovskites. Thermocheniical data suggest that "disordered" perovskite phases in fact contain pervasive clustering and/or short range order.

Original languageEnglish (US)
Title of host publicationFundamental Physics of Ferroelectrics 2000
Subtitle of host publicationAspen Center for Physics Winter Workshop
EditorsRonald E. Cohen, Richard A. Mewaldt
PublisherAmerican Institute of Physics Inc.
Number of pages9
ISBN (Electronic)1563969599
StatePublished - Sep 12 2000
Externally publishedYes
EventAspen Center for Physics Winter Workshop on Fundamental Physics of Ferroelectrics 2000 - Aspen, United States
Duration: Feb 13 2000Feb 20 2000

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


ConferenceAspen Center for Physics Winter Workshop on Fundamental Physics of Ferroelectrics 2000
Country/TerritoryUnited States

ASJC Scopus subject areas

  • General Physics and Astronomy


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