Effect of water on the structure of rhyolite glasses - X-ray diffraction and Raman spectroscopy studies
Identifieur interne : 003351 ( Main/Exploration ); précédent : 003350; suivant : 003352Effect of water on the structure of rhyolite glasses - X-ray diffraction and Raman spectroscopy studies
Auteurs : N. Zotov [Bulgarie] ; Y. Yanev [Bulgarie] ; M. Epelbaum [Russie] ; L. Konstantinov [Bulgarie]Source :
- Journal of Non-Crystalline Solids [ 0022-3093 ] ; 1991.
Abstract
Wide-angle X-ray diffraction and Raman spectroscopy investigations of the structure of several water-containing silicate glasses with rhyolite compositions quenched from 2 kbar pressure and 1000°C temperature have been carried out. It is shown that the main difference between the diffraction patterns is a displacement of the first sharp diffraction peak (FSDP) to higher Q values (Q = 4 π sin(θ)/λ) with increasing water content. At the same time, a comparison of the reduced radial distribution functions shows that the first and the second nearest neighbour distances do not change position with composition. The electron density correlation functions clearly indicate a decrease of the correlation length and an increase of the local packing of the structural units with increasing the total water content. The Raman spectroscopy results indicate that the glasses have an almost completely polymerized three-dimensional network. This fact is confirmed by calculation of the number of non-bridging oxygens per tetrahedron (NBO/T) from the bulk chemical composition. It is suggested that the structure of water-bearing rhyolite glasses is best described as consisting of locally densified, fully polymerized anhydrous microdomains separated by water-rich disordered regions. This structural model is consistent with previous Raman spectroscopy studies and molecular dynamics simulations of permanently densified amorphous SiO2.
Url:
DOI: 10.1016/S0022-3093(05)80030-4
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 001B23
- to stream Istex, to step Curation: 001A13
- to stream Istex, to step Checkpoint: 002587
- to stream Main, to step Merge: 003532
- to stream Main, to step Curation: 003351
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Effect of water on the structure of rhyolite glasses - X-ray diffraction and Raman spectroscopy studies</title><author><name sortKey="Zotov, N" sort="Zotov, N" uniqKey="Zotov N" first="N." last="Zotov">N. Zotov</name></author><author><name sortKey="Yanev, Y" sort="Yanev, Y" uniqKey="Yanev Y" first="Y." last="Yanev">Y. Yanev</name></author><author><name sortKey="Epelbaum, M" sort="Epelbaum, M" uniqKey="Epelbaum M" first="M." last="Epelbaum">M. Epelbaum</name></author><author><name sortKey="Konstantinov, L" sort="Konstantinov, L" uniqKey="Konstantinov L" first="L." last="Konstantinov">L. Konstantinov</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:40A291771C8D5EA5CA9C531C7CE94AF2498EDD01</idno><date when="1992" year="1992">1992</date><idno type="doi">10.1016/S0022-3093(05)80030-4</idno><idno type="url">https://api.istex.fr/document/40A291771C8D5EA5CA9C531C7CE94AF2498EDD01/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001B23</idno><idno type="wicri:Area/Istex/Curation">001A13</idno><idno type="wicri:Area/Istex/Checkpoint">002587</idno><idno type="wicri:doubleKey">0022-3093:1992:Zotov N:effect:of:water</idno><idno type="wicri:Area/Main/Merge">003532</idno><idno type="wicri:Area/Main/Curation">003351</idno><idno type="wicri:Area/Main/Exploration">003351</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Effect of water on the structure of rhyolite glasses - X-ray diffraction and Raman spectroscopy studies</title><author><name sortKey="Zotov, N" sort="Zotov, N" uniqKey="Zotov N" first="N." last="Zotov">N. Zotov</name><affiliation wicri:level="1"><country xml:lang="fr">Bulgarie</country><wicri:regionArea>Institute of Applied Mineralogy, Bulgarian Academy of Sciences, Rakovski street 92, Sofia 1000</wicri:regionArea><placeName><settlement type="city">Sofia</settlement><region nuts="2">Sofia-ville (oblast)</region></placeName></affiliation></author><author><name sortKey="Yanev, Y" sort="Yanev, Y" uniqKey="Yanev Y" first="Y." last="Yanev">Y. Yanev</name><affiliation wicri:level="1"><country xml:lang="fr">Bulgarie</country><wicri:regionArea>Geological Institute, Bulgarian Academy of Sciences, Akad. G. Bonchev street 1, Block 24, Sofia 1113</wicri:regionArea><placeName><settlement type="city">Sofia</settlement><region nuts="2">Sofia-ville (oblast)</region></placeName></affiliation></author><author><name sortKey="Epelbaum, M" sort="Epelbaum, M" uniqKey="Epelbaum M" first="M." last="Epelbaum">M. Epelbaum</name><affiliation wicri:level="1"><country xml:lang="fr">Russie</country><wicri:regionArea>Institute of Experimental Mineralogy, USSR Academy of Sciences, Chernologolovka 142432</wicri:regionArea><wicri:noRegion>Chernologolovka 142432</wicri:noRegion></affiliation></author><author><name sortKey="Konstantinov, L" sort="Konstantinov, L" uniqKey="Konstantinov L" first="L." last="Konstantinov">L. Konstantinov</name><affiliation wicri:level="1"><country xml:lang="fr">Bulgarie</country><wicri:regionArea>Institute of Applied Mineralogy, Bulgarian Academy of Sciences, Rakovski street 92, Sofia 1000</wicri:regionArea><placeName><settlement type="city">Sofia</settlement><region nuts="2">Sofia-ville (oblast)</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Non-Crystalline Solids</title><title level="j" type="abbrev">NOC</title><idno type="ISSN">0022-3093</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1991">1991</date><biblScope unit="volume">142</biblScope><biblScope unit="supplement">C</biblScope><biblScope unit="page" from="234">234</biblScope><biblScope unit="page" to="246">246</biblScope></imprint><idno type="ISSN">0022-3093</idno></series><idno type="istex">40A291771C8D5EA5CA9C531C7CE94AF2498EDD01</idno><idno type="DOI">10.1016/S0022-3093(05)80030-4</idno><idno type="PII">S0022-3093(05)80030-4</idno><idno type="ArticleID">05800304</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-3093</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Wide-angle X-ray diffraction and Raman spectroscopy investigations of the structure of several water-containing silicate glasses with rhyolite compositions quenched from 2 kbar pressure and 1000°C temperature have been carried out. It is shown that the main difference between the diffraction patterns is a displacement of the first sharp diffraction peak (FSDP) to higher Q values (Q = 4 π sin(θ)/λ) with increasing water content. At the same time, a comparison of the reduced radial distribution functions shows that the first and the second nearest neighbour distances do not change position with composition. The electron density correlation functions clearly indicate a decrease of the correlation length and an increase of the local packing of the structural units with increasing the total water content. The Raman spectroscopy results indicate that the glasses have an almost completely polymerized three-dimensional network. This fact is confirmed by calculation of the number of non-bridging oxygens per tetrahedron (NBO/T) from the bulk chemical composition. It is suggested that the structure of water-bearing rhyolite glasses is best described as consisting of locally densified, fully polymerized anhydrous microdomains separated by water-rich disordered regions. This structural model is consistent with previous Raman spectroscopy studies and molecular dynamics simulations of permanently densified amorphous SiO2.</div></front></TEI><affiliations><list><country><li>Bulgarie</li><li>Russie</li></country><region><li>Sofia-ville (oblast)</li></region><settlement><li>Sofia</li></settlement></list><tree><country name="Bulgarie"><region name="Sofia-ville (oblast)"><name sortKey="Zotov, N" sort="Zotov, N" uniqKey="Zotov N" first="N." last="Zotov">N. Zotov</name></region><name sortKey="Konstantinov, L" sort="Konstantinov, L" uniqKey="Konstantinov L" first="L." last="Konstantinov">L. Konstantinov</name><name sortKey="Yanev, Y" sort="Yanev, Y" uniqKey="Yanev Y" first="Y." last="Yanev">Y. Yanev</name></country><country name="Russie"><noRegion><name sortKey="Epelbaum, M" sort="Epelbaum, M" uniqKey="Epelbaum M" first="M." last="Epelbaum">M. Epelbaum</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Ticri/CIDE/explor/OcrV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 003351 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 003351 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Ticri/CIDE
|area= OcrV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= ISTEX:40A291771C8D5EA5CA9C531C7CE94AF2498EDD01
|texte= Effect of water on the structure of rhyolite glasses - X-ray diffraction and Raman spectroscopy studies
}}
| This area was generated with Dilib version V0.6.32. |  |