Raman scattering study and symmetry aspects of the phase transition in ferroelastic Sb5O7I

URN to cite this document:: urn:nbn:de:bvb:355-epub-175517
DOI to cite this document:: 10.5283/epub.17551

Prettl, Wilhelm ; Rieder, K. H.

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Date of publication of this fulltext: 26 Oct 2010 12:29

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Abstract

The low-frequency Raman spectra of ferroelastic Sb5O7I crystals have been measured for temperatures ranging from 295 K to well above the phase transition at Tc=481 K. A strongly damped soft mode which is present only in the ferroelastic phase and quasielastic scattering from a central line, whose intensity peaks around Tc, are observed. A symmetry analysis shows that the instability of the ...