Search results for "silice drogata"

showing 3 items of 3 documents

Modification of Ce oxidation state by thermal treatments in controlled atmosphere of Ce-Ti-Eu doped SiO2 glasses

2010

Settore FIS/01 - Fisica Sperimentalesilice drogata diffusione proprieta' ottiche
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Comparison of gamma and beta-ray irradiation effects in sol-gel Ge-doped SiO2

2009

silice drogata difetti di puntoSettore FIS/01 - Fisica Sperimentale
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Influence of Ge doping level on the EPR signal of Ge(1), Ge(2) and E'Ge defects in Ge-doped silica

2011

Abstract We present an experimental investigation on the Ge doping level dependence of the Electron Paramagnetic Resonance (EPR) signal spectral features of the Ge(1), Ge(2) and E'Ge defects induced in Ge doped silica. We have studied samples produced by sol–gel or PCVD techniques and doped with different amounts of Ge up to 20% by weight. The samples were gamma or beta ray irradiated and successively they were thermally treated to isolate the EPR signals of the different point defects. The data show that the EPR line shapes of the Ge(1) and the Ge(2) centers are progressively modified for doping level higher than 1%, whereas the line shape of the E'Ge defect appears independent from the do…

inorganic chemicalsMaterials scienceAnalytical chemistrychemistry.chemical_elementGermaniumSilica paramagnetic point defects Ge-doped silicasilice drogata difetti di punto risonanza magneticalaw.inventionsymbols.namesakeraman spectroscopylawCondensed Matter::SuperconductivityBeta particleMaterials ChemistryIrradiationElectron paramagnetic resonanceSol-gelSettore FIS/01 - Fisica SperimentaleDopingtechnology industry and agricultureCondensed Matter PhysicsCrystallographic defectElectronic Optical and Magnetic MaterialschemistryCeramics and Compositessymbolslipids (amino acids peptides and proteins)Condensed Matter::Strongly Correlated ElectronsRaman spectroscopyhuman activitiesJournal of Non-Crystalline Solids
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