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Raman scattering investigation and symmetry analysis of ferroelectric/ferroelastic Sb5O7I polytype 2MA

URN to cite this document:
urn:nbn:de:bvb:355-epub-175497
DOI to cite this document:
10.5283/epub.17549
Prettl, Wilhelm ; Rieder, K. H. ; Nitsche, R. N.
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Date of publication of this fulltext: 26 Oct 2010 12:28


Abstract

The polytype 2MA (beta-Sb5O7I) has the simplest acentric structure of the antimony oxideiodide family. It undergoes an antiferrodistortive phase transition at 438K and is both ferroelectric and ferroelastic below that temperature. The complete polarized Raman spectra in the ferroic phase have been measured and compared with those of the ferroelastic, centric polytype 2MC (agr-Sb5O7I). Several ...

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