Electron diffraction analysis of the ferroelectric aluminate sodalite Sr/sub 8/(Al/sub 12/O/sub 24/((CrO/sub 4/)/sub 2/

The structures of the cubic, the tetragonal and the orthorhombic phases of single crystals of the ferroelectric aluminate sodalite Sr/sub 8/(Al/sub 12/O/sub 24/)(CrO/sub 4/)/sub 2/ were investigated by selected area and convergent beam electron diffraction in the temperature range between 180 and 370 K. Evidence was obtained for the non-centrosymmetric character of the cubic phase which infers the space group I43m. The electron diffraction analysis points to the following phases I43m, P4/sub 2//mmc and Ama2.


Published in:
ferroelectrics, 120, 3-4, 261-70
Year:
1991
Laboratories:




 Record created 2007-02-15, last modified 2018-03-17


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