Raman spectra of molybdenum phosphate glasses and some crystalline analogues
- Fisk Univ., Nashville, TN (USA). Dept. of Physics
- Belmont Coll., Nashville, TN (USA). Dept. of Physics
The Raman spectra of a series of glasses in the system MoO{sub 3}P{sub 2}O{sub 5} and the polycrystalline compounds molybdenum metaphosphate (MoO{sub 2}(PO{sub 3}){sub 2}) and molybdenum pyrophosphate ((MoO{sub 2}){sub 2}P{sub 2}O{sub 7}) are reported. The spectra indicate that traces of P{double bond}O and phosphate chains are present only in glasses having less than 50 mol% MoO{sub 3}. Comparison of the glass spectra with spectra of crystalline molybdenum phosphates indicates the presence of metaphosphate and orthophosphate structural groups of MoO{sub 3} concentrations of about 50 mol% or less. As the MoO{sub 3} concentration is increased, the bands characteristic of pyrophosphate groups appear in the spectra and become the dominant feature at 76 mol% MoO{sub 3} concentration.
- OSTI ID:
- 6614717
- Journal Information:
- Journal of the American Ceramic Society; (USA), Journal Name: Journal of the American Ceramic Society; (USA) Vol. 73:3; ISSN 0002-7820; ISSN JACTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ALLOYS
CHALCOGENIDES
CHEMICAL COMPOSITION
CRYSTAL STRUCTURE
CRYSTALS
GLASS
INTERMETALLIC COMPOUNDS
MICROSTRUCTURE
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHOSPHATE GLASS
PHOSPHORUS COMPOUNDS
POLYCRYSTALS
PYROPHOSPHATES
RAMAN SPECTRA
REFRACTORY METAL COMPOUNDS
SPECTRA
TRANSITION ELEMENT COMPOUNDS