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Crystal Chemistry of Melilite [CaLa](2)[Ga](2)[Ga2O7](2): a Five Dimensional Solid Electrolyte

Wei, Fengxia; Baikie, Tom; An, Tao; Kloc, Christian; Wei, Jun; White, Timothy

Description

Melilite-type [A2]2[BI]2[BII2O7]2 gallates are promising ion conducting electrolytes for deployment in solid oxide fuel cells. Single crystals of [CaLa]2[Ga]2[Ga2O7]2, grown in an optical floating zone furnace, were investigated using a combination of transmission electron microscopy and single crystal X-ray diffraction. Strong anisotropic displacements of oxygen arise from the structural misfit between the interlayer Ca/La cations and the [Ga]-[Ga2O7] tetrahedral layers. A model employing...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/72219
Source: Inorganic Chemistry
DOI: 10.1021/ic300585t

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