title: High-pressure resonance Raman spectroscopic study of ultramarine blue pigment.
abstract: The resonance Raman spectrum of ultramarine has been studied as a function of pressure up to 5 GPa. The overtone progressions of the ν(1) fundamental and the combination bands of S(3)(-) and the ν(1) band of S(2)(-) were measured and the pressure dependences were determined. The symmetric stretching mode of S(3)(-) is nearly harmonic. No phase transition was observed over the measured pressure range.
authors.affiliation: Department of Chemistry, McGill University, 801 Sherbrooke St., W. Montreal, QC, Canada H3A 0B8.
authors.forename: Mirela M
authors.initials: MM
authors.lastname: Barsan
authors.forename: Ian S
authors.initials: IS
authors.lastname: Butler
authors.forename: Denis F R
authors.initials: DF
authors.lastname: Gilson
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry*; D044367:Phase Transition; D011312:Pressure; D013059:Spectrum Analysis, Raman / Q000379:methods*
chemical_list: D000538:Aluminum Silicates; C009620:ultramarine (pigment)