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The low-frequency Raman spectrum of trigonal (NH4)2 TiF6

โœ Scribed by T. E. Jenkins


Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
175 KB
Volume
15
Category
Article
ISSN
0377-0486

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## Abstract Raman spectra of oriented single crystals of (NH~4~)~2~SiF~6~ are reported for the temperature range 440โ€“20 K. The trigonal phase stable below 278 K undergoes a transition at 38.6 K. The changes in the spectra show that the symmetry does not remain trigonal, but give evidence for a lowe