Abstract
Abstract A study of the Raman spectrum of single crystals of silver azide has been made in the temperature range 10 to 400 K. Owing to the small sizes of the crystals that could be grown, the Raman-active modes have been identified by a structural correlation with the equivalent modes found in potassium azide. At low temperatures some of the external Raman-active modes are found to soften and shift to lower energies while some of the other modes are found to harden, although there is no evidence for any phase change. By comparison, cooled potassium azide does not show this effect and all the external Raman-active phonon frequencies are found to harden as expected.
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