A TEM and RUM study of the inherent displacive flexibility of the fresnoite framework structure type
Date
2002
Authors
Withers, Raymond
Tabira, Y.
Liu, Yun
Hoche, Thomas
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Volume Title
Publisher
Springer
Abstract
A careful electron diffraction study has been made of the incommensurately modulated room-temperature phases of the fresnoites Ba2TiGe2O8 (BTG) and Ba2TiSi2O8 (BTS) and used to determine their (3 + 1)- and (3 + 2)-dimensional superspace group symmetries.
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Keywords: crystal structure; fresnoite; phase transition; temperature; transmission electron microscopy Fresnoites; Incommensurately modulated; Rigid unit modes; Superspace symmetries
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Source
Physics and Chemistry of Minerals
Type
Journal article
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2037-12-31
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