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Pr3+ and Tm3+ containing transparent glass ceramics in the GeO2-PbO-PbF2-LnF3 system

Identifieur interne : 001B19 ( Main/Exploration ); précédent : 001B18; suivant : 001B20

Pr3+ and Tm3+ containing transparent glass ceramics in the GeO2-PbO-PbF2-LnF3 system

Auteurs : B. Klimesz [Pologne] ; G. Dominiak-Dzik [Pologne] ; P. Solarz [Pologne] ; M. Zelechower [Pologne] ; W. Ryba-Romanowski [Pologne]

Source :

Journal of alloys and compounds [ 0925-8388 ] ; 2004.

RBID : Pascal:04-0601458

Descripteurs français

Pascal (Inist)
- Analyse thermique différentielle, Transition vitreuse, Cristallisation, Traitement thermique, Précipitation, Formation verre, Mesure acoustique, Essai émission acoustique, Fluorescence, Spectre absorption, Propriété optique, Composition chimique, Matériau transparent, Vitrocéramique, Oxyfluorure, Verre, Pr, Tm, 6470P, 7855Q.
Wicri :
- topic : Verre.

English descriptors

KwdEn :
- Absorption spectra, Acoustic emission testing, Acoustic measurement, Chemical composition, Crystallization, Differential thermal analysis, Fluorescence, Glass, Glass ceramics, Glass formation, Glass transition, Heat treatments, Optical properties, Oxyfluorides, Precipitation, Transparent material.

Abstract

Oxyfluoride glasses with composition 50GeO₂-(50-x)PbO-xPbF₂ (x ≤ 15 mol%) containing praseodymium or thulium were melted from commercial raw materials in normal atmosphere. Based on the results of differential thermal analysis (DTA), glass transition temperatures and oxide glass crystallisation temperatures have been derived. Then the glass samples were thermally treated in order to achieve controlled precipitation of PbF₂. Process of formation of glass ceramics has been monitored with the aid of the DTA and X-ray measurements. The control acoustic emission (AE) measurements confirm the DTA results. It has been found that after heat treatment the crystallisation temperatures of investigated materials have been changed due to the PbF₂ content and kind of doped ions. The influence of the kind of doped ions on the glass stability was observed. The effect of thermal treatment on the absorption spectra and kinetics of the fluorescent levels of Pr³⁺ and Tm³⁺ was studied. In the case of Tm³⁺ doped systems it was found that this effect on the relaxation of the ¹G₄ level was weak, whereas the decay of the ³H₄ level was slower by a factor of 3 roughly with respect to that recorded with as-melted glass. Relaxation rates of the ³P₀ and ¹D₂ levels of Pr³⁺ showed marked dependence on both the PbF₂ and Pr^3- content in as-melted glass and in glass ceramics.

Affiliations:

Pologne

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Le document en format XML

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 and Tm<sup>3+</sup>
 containing transparent glass ceramics in the GeO<sub>2</sub>
-PbO-PbF<sub>2</sub>
-LnF<sub>3</sub>
 system</title>
<author><name sortKey="Klimesz, B" sort="Klimesz, B" uniqKey="Klimesz B" first="B." last="Klimesz">B. Klimesz</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Physical Laboratory, Opole Technical University, ul. Ozimska 75</s1>
<s2>Opole 45-370</s2>
<s3>POL</s3>
<sZ>1 aut.</sZ>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Pr<sup>3+</sup>
 and Tm<sup>3+</sup>
 containing transparent glass ceramics in the GeO<sub>2</sub>
-PbO-PbF<sub>2</sub>
-LnF<sub>3</sub>
 system</title>
<author><name sortKey="Klimesz, B" sort="Klimesz, B" uniqKey="Klimesz B" first="B." last="Klimesz">B. Klimesz</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Physical Laboratory, Opole Technical University, ul. Ozimska 75</s1>
<s2>Opole 45-370</s2>
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<sZ>1 aut.</sZ>
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<country>Pologne</country>
<wicri:noRegion>Opole 45-370</wicri:noRegion>
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</author>
<author><name sortKey="Dominiak Dzik, G" sort="Dominiak Dzik, G" uniqKey="Dominiak Dzik G" first="G." last="Dominiak-Dzik">G. Dominiak-Dzik</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2</s1>
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<s3>POL</s3>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
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<country>Pologne</country>
<wicri:noRegion>50-395 Wroclaw</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Solarz, P" sort="Solarz, P" uniqKey="Solarz P" first="P." last="Solarz">P. Solarz</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2</s1>
<s2>50-395 Wroclaw</s2>
<s3>POL</s3>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
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<country>Pologne</country>
<wicri:noRegion>50-395 Wroclaw</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Zelechower, M" sort="Zelechower, M" uniqKey="Zelechower M" first="M." last="Zelechower">M. Zelechower</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Department of Material Science, Silesian University of Technology, ul. Krasiñskiego 8</s1>
<s2>Katowice 40-019</s2>
<s3>POL</s3>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Pologne</country>
<wicri:noRegion>Katowice 40-019</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Ryba Romanowski, W" sort="Ryba Romanowski, W" uniqKey="Ryba Romanowski W" first="W." last="Ryba-Romanowski">W. Ryba-Romanowski</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2</s1>
<s2>50-395 Wroclaw</s2>
<s3>POL</s3>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
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<country>Pologne</country>
<wicri:noRegion>50-395 Wroclaw</wicri:noRegion>
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<series><title level="j" type="main">Journal of alloys and compounds</title>
<title level="j" type="abbreviated">J. alloys compd.</title>
<idno type="ISSN">0925-8388</idno>
<imprint><date when="2004">2004</date>
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<seriesStmt><title level="j" type="main">Journal of alloys and compounds</title>
<title level="j" type="abbreviated">J. alloys compd.</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorption spectra</term>
<term>Acoustic emission testing</term>
<term>Acoustic measurement</term>
<term>Chemical composition</term>
<term>Crystallization</term>
<term>Differential thermal analysis</term>
<term>Fluorescence</term>
<term>Glass</term>
<term>Glass ceramics</term>
<term>Glass formation</term>
<term>Glass transition</term>
<term>Heat treatments</term>
<term>Optical properties</term>
<term>Oxyfluorides</term>
<term>Precipitation</term>
<term>Transparent material</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Analyse thermique différentielle</term>
<term>Transition vitreuse</term>
<term>Cristallisation</term>
<term>Traitement thermique</term>
<term>Précipitation</term>
<term>Formation verre</term>
<term>Mesure acoustique</term>
<term>Essai émission acoustique</term>
<term>Fluorescence</term>
<term>Spectre absorption</term>
<term>Propriété optique</term>
<term>Composition chimique</term>
<term>Matériau transparent</term>
<term>Vitrocéramique</term>
<term>Oxyfluorure</term>
<term>Verre</term>
<term>Pr</term>
<term>Tm</term>
<term>6470P</term>
<term>7855Q</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Verre</term>
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<front><div type="abstract" xml:lang="en">Oxyfluoride glasses with composition 50GeO<sub>2</sub>
-(50-x)PbO-xPbF<sub>2</sub>
 (x ≤ 15 mol%) containing praseodymium or thulium were melted from commercial raw materials in normal atmosphere. Based on the results of differential thermal analysis (DTA), glass transition temperatures and oxide glass crystallisation temperatures have been derived. Then the glass samples were thermally treated in order to achieve controlled precipitation of PbF<sub>2</sub>
. Process of formation of glass ceramics has been monitored with the aid of the DTA and X-ray measurements. The control acoustic emission (AE) measurements confirm the DTA results. It has been found that after heat treatment the crystallisation temperatures of investigated materials have been changed due to the PbF<sub>2</sub>
 content and kind of doped ions. The influence of the kind of doped ions on the glass stability was observed. The effect of thermal treatment on the absorption spectra and kinetics of the fluorescent levels of Pr<sup>3+</sup>
 and Tm<sup>3+</sup>
 was studied. In the case of Tm<sup>3+</sup>
 doped systems it was found that this effect on the relaxation of the <sup>1</sup>
G<sub>4</sub>
 level was weak, whereas the decay of the <sup>3</sup>
H<sub>4</sub>
 level was slower by a factor of 3 roughly with respect to that recorded with as-melted glass. Relaxation rates of the <sup>3</sup>
P<sub>0</sub>
 and <sup>1</sup>
D<sub>2</sub>
 levels of Pr<sup>3+</sup>
 showed marked dependence on both the PbF<sub>2</sub>
 and Pr<sup>3-</sup>
 content in as-melted glass and in glass ceramics.</div>
</front>
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<affiliations><list><country><li>Pologne</li>
</country>
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<tree><country name="Pologne"><noRegion><name sortKey="Klimesz, B" sort="Klimesz, B" uniqKey="Klimesz B" first="B." last="Klimesz">B. Klimesz</name>
</noRegion>
<name sortKey="Dominiak Dzik, G" sort="Dominiak Dzik, G" uniqKey="Dominiak Dzik G" first="G." last="Dominiak-Dzik">G. Dominiak-Dzik</name>
<name sortKey="Ryba Romanowski, W" sort="Ryba Romanowski, W" uniqKey="Ryba Romanowski W" first="W." last="Ryba-Romanowski">W. Ryba-Romanowski</name>
<name sortKey="Solarz, P" sort="Solarz, P" uniqKey="Solarz P" first="P." last="Solarz">P. Solarz</name>
<name sortKey="Zelechower, M" sort="Zelechower, M" uniqKey="Zelechower M" first="M." last="Zelechower">M. Zelechower</name>
</country>
</tree>
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</record>

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Pr3+ and Tm3+ containing transparent glass ceramics in the GeO2-PbO-PbF2-LnF3 system

Pr3+ and Tm3+ containing transparent glass ceramics in the GeO2-PbO-PbF2-LnF3 system

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Descripteurs français

English descriptors

Abstract

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