Isolating the totally symmetric Raman spectrum of cubic crystals: The A1 spectrum of Cr3B7O13Cl
- 1 December 1974
- journal article
- Published by Wiley in Journal of Raman Spectroscopy
- Vol. 2 (6) , 555-562
- https://doi.org/10.1002/jrs.1250020603
Abstract
It is shown that by measuring the appropriate diagonal and off‐diagonal tensor con ponents of the Raman spectrum of a cubic crystal and then carrying out a simple subtraction process in a computer it is possible to isolate the totally symmetric Raman spectrum from the other components. The method relies on obtaining the data in digital form using automated spectrometry. The technique is applied to cubic Cr3B7O13Cl, whose Raman spectrum is reported here for the first time. The A1 spectrum at 300K comprises four bands at 176, 209, 375 and 657 cm−1 in agreement with group theoretical predictions. In addition, the spectrum contains a prominent wing feature extending to 250 cm−1 that is most likely associated with the ferroelectric phase transition at 263K.Keywords
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