Critical behaviour of the light scattering intensity at the phase transitions in hexammine cadmium (II) halides
- 28 September 1977
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 10 (18) , L521-L526
- https://doi.org/10.1088/0022-3719/10/18/005
Abstract
A preliminary investigation is reported on the Raman spectra of hexammine cadmium (II) halides above and below their phase transition temperatures. The spectra indicate that both dynamic and static changes occur at the phase transitions. Critical effects of the light scattering intensity of internal modes involving NH3 motion, which occur, provide direct evidence that ordering of the NH3 groups begins at Tc is approached from above, and that these transitions are orientational in nature with an accompanying static distortion.Keywords
This publication has 9 references indexed in Scilit:
- Critical effects of the light scattering intensity at an order–disorder phase transition: KCNThe Journal of Chemical Physics, 1976
- Lattice vibrations in hexammine nickel halidesJournal of Physics C: Solid State Physics, 1976
- Vibrational spectra and force constants of pure ammine complexesCoordination Chemistry Reviews, 1976
- Shell model investigation of the Raman scattering in the ordered and disordered phases of NH4BrThe Journal of Chemical Physics, 1975
- Mössbauer effect and x-ray studies of the phase transition in iron hexammine saltsThe Journal of Chemical Physics, 1975
- Theory of Critical-Fluctuation-Enhanced Raman Scattering by Phonons in NBrPhysical Review B, 1972
- Heat capacity and phase transition of some f.c.c. hexammine iodides above 1 KPhysica, 1971
- An explanation of the critical epr linewidth transitions in hexammine nickel halidesJournal of Physics C: Solid State Physics, 1970
- An explanation of the electron paramagnetic transitions and low temperature entropy anomalies of hexammine nickel halidesJournal of Physics C: Solid State Physics, 1969