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Ab Initio Study of Oxygen-Vacancy Ordering in Oxygen Conducting Ba2In2O5
Published online by Cambridge University Press: 26 February 2011
Abstract
The thermodynamic properties of Ba2In2O5 are studied using Monte Carlo simulation of an ab initio based cluster expansion. The simulations predict a first-order orthorhombic to tetragonal phase transition, followed by a second-order tetragonal to cubic phase transition, which is in good agreement with experiments. It is predicted that the orthorhombic to tetragonal transition is associated with major disordering in the O(3) plane as well as some introduction of vacancies in the O(2) plane.
Keywords
- Type
- Research Article
- Information
- MRS Online Proceedings Library (OPL) , Volume 972: Symposium AA – Solid-State Ionics—2006 , 2006 , 0972-AA04-06
- Copyright
- Copyright © Materials Research Society 2007
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