Premium
Raman spectra and phase transition of ammonium uranyl nitrate
Author(s) -
Caville C.
Publication year - 1977
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250060505
Subject(s) - raman spectroscopy , rubidium , caesium , chemistry , uranyl , ammonium , phase transition , ion , spectral line , ammonium nitrate , crystal (programming language) , uranyl nitrate , atmospheric temperature range , phase (matter) , crystallography , analytical chemistry (journal) , inorganic chemistry , materials science , potassium , uranium , condensed matter physics , physics , organic chemistry , chromatography , astronomy , meteorology , computer science , optics , metallurgy , programming language
Raman spectra of single crystals of NH 4 UO 2 (NO 3 ) 3 are recorded for the temperature range 293–6 K. In various orientations the room temperature spectra are similar to the corresponding isomorphous rubidium and caesium salts. As the crystal is cooled the changes in the Raman spectra indicate a phase transition due to an ordering of the ammonium ions.