AustralieFrV1, Main, Exploration, bibRecord, 00D946

Systematic study of refractive index variations with composition in heavy metal fluoride glasses

Identifieur interne : 00D946 ( Main/Exploration ); précédent : 00D945; suivant : 00D947

Systematic study of refractive index variations with composition in heavy metal fluoride glasses

Auteurs : D. R. Macfarlane [Australie] ; P. J. Newman ; ZHIPING ZHOU ; J. Javorniczky

Source :

Journal of non-crystalline solids [ 0022-3093 ] ; 1993.

RBID : Pascal:94-0009690

Descripteurs français

Pascal (Inist)
- Indice réfraction, Réfractivité, Effet concentration, Transformation vitreuse, Cristallisation, Calorimétrie différentielle balayage, Stabilité phase, Verre, Etude expérimentale, Lanthane composé, Métal alcalin composé, Zirconium composé, Baryum composé, Fluorure, 7820C, 6470P.
Wicri :
- topic : Verre.

English descriptors

KwdEn :
- Alkali metal compounds, Barium compounds, Crystallization, Differential scanning calorimetry, Experimental study, Fluorides, Glass, Glass transformations, Lanthanum compounds, Phase stability, Quantity ratio, Refractive index, Refractivity, Zirconium compounds.

Abstract

In order to further understand the dependence of the refractive index on composition, a systematic investigation of the relationship between these quantities has been undertaken. Starting with well known stable quinary glass compositions containing zirconium tetrafluoride, the effects of dopants such as alkali ions and PbF₂ on the refractive index have been investigated. In addition, thermal analysis was carried out to ascertain the extent to which glass stability had been affected by the compositional changes. A refractive index difference, Δn, of up to 0.02 and numerical aperture (NA) of 0.23 was obtained at compositions for which the difference in glass transition temperature, ΔT_g, was only 1^oC. The molar refractivity for stable glass systems showed a good correlation with theoretically predicted results, except for systems containing LiF

Affiliations:

Australie

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Le document en format XML

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<term>Experimental study</term>
<term>Fluorides</term>
<term>Glass</term>
<term>Glass transformations</term>
<term>Lanthanum compounds</term>
<term>Phase stability</term>
<term>Quantity ratio</term>
<term>Refractive index</term>
<term>Refractivity</term>
<term>Zirconium compounds</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Indice réfraction</term>
<term>Réfractivité</term>
<term>Effet concentration</term>
<term>Transformation vitreuse</term>
<term>Cristallisation</term>
<term>Calorimétrie différentielle balayage</term>
<term>Stabilité phase</term>
<term>Verre</term>
<term>Etude expérimentale</term>
<term>Lanthane composé</term>
<term>Métal alcalin composé</term>
<term>Zirconium composé</term>
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<term>Fluorure</term>
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<front><div type="abstract" xml:lang="en">In order to further understand the dependence of the refractive index on composition, a systematic investigation of the relationship between these quantities has been undertaken. Starting with well known stable quinary glass compositions containing zirconium tetrafluoride, the effects of dopants such as alkali ions and PbF<sub>2</sub>
 on the refractive index have been investigated. In addition, thermal analysis was carried out to ascertain the extent to which glass stability had been affected by the compositional changes. A refractive index difference, Δn, of up to 0.02 and numerical aperture (NA) of 0.23 was obtained at compositions for which the difference in glass transition temperature, ΔT<sub>g</sub>
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C. The molar refractivity for stable glass systems showed a good correlation with theoretically predicted results, except for systems containing LiF</div>
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Systematic study of refractive index variations with composition in heavy metal fluoride glasses

Systematic study of refractive index variations with composition in heavy metal fluoride glasses

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri