Raman scattering study of the disorder-order phase transition in NH4Cl. II
- 15 February 1973
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 58 (4), 1411-1419
- https://doi.org/10.1063/1.1679373
Abstract
A complete Raman scattering study of an NH4Cl single crystal at both sides of Tλ has been carried out and new results are reported. The study includes measurements and interpretations of the Raman spectral bandwidths, intensities and frequencies of the lattice and internal modes as a function of temperature. By the careful examination of the polarization properties of various scattering spectral components, it is suggested that well‐defined Raman selection rules are operative in the orientationally disordered crystal.Keywords
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