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Composition- and temperature-dependent phase transitions in 1:3 ordered perovskites Ba 4- x Sr x NaSb 3 O 12

Zhou, Qingdi; Kennedy, Brendan James; Elcombe, Margaret M; Withers, Raymond


A series of 25 members of the 1:3 ordered perovskite family of the type Ba4-xSrxNaSb3O12 has been synthesized and their structures determined using synchrotron X-ray and neutron powder diffraction techniques. At room temperature the sample Ba4NaSb3O12 has a cubic structure in space group Im over(3, -) m with a=8.2821(1) Å, where the Na and Sb cations are ordered in the octahedral sites but there is no tilting of the (Na/Sb)O6 octahedra. As the average size of the A-site cation decreases,...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Journal of Solid State Chemistry
DOI: 10.1016/j.jssc.2007.09.004


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