A TEM and RUM study of the inherent displacive flexibility of the fresnoite framework structure type
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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|Source:||Physics and Chemistry of Minerals|
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