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Journal of Materials Science

Published in:

01-01-2011

Effect of inversion on thermoelastic and thermal transport properties of MgAl₂O₄ spinel by atomistic simulation

Authors: P. Shukla, A. Chernatynskiy, J. C. Nino, S. B. Sinnott, S. R. Phillpot

Published in: Journal of Materials Science | Issue 1/2011

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Abstract

MgAl₂O₄ is commonly found in the normal spinel structure with the Mg²⁺ ions located in tetrahedral sites and the Al³⁺ ions occupying octahedral sites. We use atomic-level simulation to characterize the effect of inversion on the elastic and thermal properties. Cation ordering and volumetric changes tend to affect the structure and properties in opposite ways, thereby compensating each other up for up to 50% inversion. For higher inversions, volumetric effects dominate. In the case of the thermal conductivity, the effects of changes in the elastic properties and thermal expansion essentially cancel over the entire range of inversion.

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Title: Effect of inversion on thermoelastic and thermal transport properties of MgAl2O4 spinel by atomistic simulation
Authors: P. Shukla
A. Chernatynskiy
J. C. Nino
S. B. Sinnott
S. R. Phillpot
Publication date: 01-01-2011
Publisher: Springer US
Published in: Journal of Materials Science / Issue 1/2011
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-010-4795-7

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