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Spectres Raman et Transition de Phase des Cristaux de (ND 4 ) 2 Cu(OD 2 ) 2 Cl 4
Author(s) -
Poulet H.,
Mathieu J. P.
Publication year - 1979
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250080310
Subject(s) - raman spectroscopy , neutron diffraction , chemistry , space group , analytical chemistry (journal) , inorganic compound , phase transition , x ray crystallography , crystallography , diffraction , crystal structure , physics , condensed matter physics , optics , organic chemistry , chromatography
The changes in the Raman spectra of single crystals of (ND 4 ) 2 Cu(OD 2 ) 2 Cl 4 with temperature are indicative of an order–disorder transition, in contradistinction with the results of neutron diffraction. A space‐group deduced for the low temperature phase from a pseudo‐spin model is in agreement with the spectral results.