Search results for " Microwave Radiation effects"

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Variability of the Si-O-Si angle in amorphous-SiO2 probed by electron paramagnetic resonance and Raman spectroscopy

2009

We report an experimental investigation by electron paramagnetic resonance (EPR) and Raman spectroscopy on a variety of amorphous silicon dioxide materials. Our study by EPR have permitted us to point out that the splitting of the primary hyperfine doublet of the Eγ′ center shows a relevant sample-to-sample variability, changing from ∼41.8 to ∼42.6 mT in the set of materials we considered. The parallel study by Raman spectroscopy has enabled us to state that this variability is attributable to the different Si-O-Si angle characterizing the matrices of the different materials. © 2009 Elsevier B.V. All rights reserved.

Raman scatteringMaterials Chemistry2506 Metals and AlloysAnalytical chemistryRadiation effectCeramics and CompositeCondensed Matter Physiclaw.inventionsymbols.namesakelawElectron spin resonanceMaterials Chemistryamorphous silica structureCoherent anti-Stokes Raman spectroscopyElectron paramagnetic resonanceHyperfine structureRadiationChemistryElectronic Optical and Magnetic MaterialSettore FIS/01 - Fisica SperimentaleSilicaCondensed Matter PhysicsRaman scattering Microwave Radiation effects Magnetic properties Raman spectroscopy Silica Radiation Electron spin resonance DefectsElectronic Optical and Magnetic MaterialsAmorphous solidMolecular geometryRaman spectroscopyCeramics and CompositessymbolsMagnetic propertieDefectRaman spectroscopyMicrowaveRaman scatteringMicrowave
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