Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/2097
Title: Structure of compounds in the Sr1-3x/2CexTiO3 homologous series
Authors: Ubic, R
Subodh, G
Sebastian, M T
Gout, D
Proffen, T
Keywords: Microwave Dielectric-Properties
Neutron powder diffraction
Complex perovskites
Relative permittivity
Issue Date: 2008
Publisher: American Chemical Society
Citation: Chemistry of Materials 20(9):3127-3133;13 May 2008
Abstract: Four compositions in the Sr1 - 3x/2CexTiO3 homologous series, corresponding to x = 0.1333, 0.1667, 0.25, and 0.4, have been produced by conventional solid-state processing. The structure of these compounds was analyzed by X-ray, electron, and neutron diffraction. While no superlattice can be observed via X-ray diffraction, both electron and neutron diffraction show evidence of a noncubic supercell caused by antiphase tilting of oxygen octahedra. The most likely space group is R (3) over barc, corresponding to an a(-)a(-)a(-) system, except for the composition x = 0.4, for which an even more complex superstructure is observed. The degree of tilt increases with increasing x.
ISSN: 0897-4756
Appears in Collections:2008

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