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Interpretation of the Boson peak in rare-earth ion doped glasses

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dc.contributor.author Tikhomirov, VK en
dc.contributor.author Jha, A en
dc.contributor.author Perakis, A en
dc.contributor.author Sarantopoulou, E en
dc.contributor.author Naftaly, M en
dc.contributor.author Krasteva, V en
dc.contributor.author Li, R en
dc.contributor.author Seddon, AB en
dc.date.accessioned 2014-03-01T01:14:23Z
dc.date.available 2014-03-01T01:14:23Z
dc.date.issued 1999 en
dc.identifier.issn 0022-3093 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/13045
dc.subject Raman Spectra en
dc.subject Rare Earth en
dc.subject.classification Materials Science, Ceramics en
dc.subject.classification Materials Science, Multidisciplinary en
dc.subject.other Cerium en
dc.subject.other Chemical bonds en
dc.subject.other Composition effects en
dc.subject.other Doping (additives) en
dc.subject.other Dysprosium en
dc.subject.other Fluorine compounds en
dc.subject.other Laser beam effects en
dc.subject.other Neodymium en
dc.subject.other Photorefractive materials en
dc.subject.other Praseodymium en
dc.subject.other Sulfur compounds en
dc.subject.other Tellurium compounds en
dc.subject.other Boson peak en
dc.subject.other Fluoride glasses en
dc.subject.other Photorefractive glass en
dc.subject.other Sulfide glasses en
dc.subject.other Tellurite glasses en
dc.subject.other Optical glass en
dc.title Interpretation of the Boson peak in rare-earth ion doped glasses en
heal.type journalArticle en
heal.identifier.primary 10.1016/S0022-3093(99)00452-4 en
heal.identifier.secondary http://dx.doi.org/10.1016/S0022-3093(99)00452-4 en
heal.language English en
heal.publicationDate 1999 en
heal.abstract The Boson peak in the Raman spectra of glasses is an ubiquitous feature. We show that doping a series of fluoride, tellurite and sulfide glass compositions with rare-earth ions, such as Pr3+, Dy3+, Nd3+, Ce3+, at concentrations between 1000 and 10,000 ppm, increases the amplitude of the Boson peak as compared to the respective undoped glasses. Further addition of rare-earth ions results in saturation and even reduction of the Boson peak ascribed to clustering of dopants and/or devitrification of glass host. Prolonged irradiation of photorefractive sulfide glasses with near-bandgap laser light also results in an increase of the Boson peak. A model is suggested for changes in the intensity and position of the Boson peak with glass composition, doping level, and after prolonged irradiation of photorefractive glasses. We propose that the presence of non-bridging anion atoms, such as F, O or S, (or anion atoms having strained bonds with increased polarizability), determines the Boson peak, as well as the solubility of rare-earth ions in glasses. (C) 1999 Elsevier Science B.V. All rights reserved. en
heal.publisher Elsevier Science Publishers B.V., Amsterdam, Netherlands en
heal.journalName Journal of Non-Crystalline Solids en
dc.identifier.doi 10.1016/S0022-3093(99)00452-4 en
dc.identifier.isi ISI:000083334800017 en
dc.identifier.volume 256 en
dc.identifier.spage 89 en
dc.identifier.epage 94 en


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