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Raman scattering in alkali azides at high pressures

✍ Scribed by C.W. Christoe; Z. Iqbal

Publisher: Elsevier Science
Year: 1976
Tongue: English
Weight: 342 KB
Volume: 39
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(76)80317-x

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✦ Synopsis

The volume dependence of R~IIXLII scattering in sodium, potassium and rubidium azides. measured for the first time to purely hydrostatic pressures of about 40 kbar, shows interesting features. In KNs, there is an increase in the relative intensity ofthe E, translational mode with increasing pressure, whereas iu isostructural RbNs, an anomalous donease in this mode frequency &IS observed. Fairly large increases in the frequencies of the N; libratioml modes were found in afl three azides. The possible implications of some of the results with regard to pressure induced phase transitions in these materials are discussed.

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