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Description
| - Glasses in the ternary system ZnO-WO3-P2O5 were studied. The glass-forming region of the ZnO-WO3-P2O5 system has been determined and the basic physical properties of the glasses were obtained. Structure and properties of three compositional series of glasses (100-x)[0.5ZnO-0.5P(2)O(5)]-xWO(3), (50-y)ZnO-yWO(3)-50P(2)O(5) and zZnO-20WO(3)-(80-z)P2O5 were studied by Raman and P-31 NMR spectroscopies. In the compositional series (100-x)[0.5ZnO-0.5P(2)O(5)]-xWO(3) homogeneous glasses were prepared in the concentration region 0-60 mol% WO3. Their glass transition temperature (T-g) increases with increasing WO3 content within the range of 460-622 degrees C. P-31 MAS NMR spectra of the glasses show that the phosphate chains are shortened by the incorporation of tungstate structural units. The co-existence of WO4 and WO6 units in the glass structure was seen in glasses with a high ZnO content, while most of the studied glasses contain tungsten atoms in WO6 octahedra. Raman spectra reveal the existence of isolated WO6 units especially in the glasses with a low WO3 content and a high P2O5 content. Clustering of WO6 units by the formation W-O-W bonds takes place in glasses with a high WO3 content as observed from Raman spectra.
- Glasses in the ternary system ZnO-WO3-P2O5 were studied. The glass-forming region of the ZnO-WO3-P2O5 system has been determined and the basic physical properties of the glasses were obtained. Structure and properties of three compositional series of glasses (100-x)[0.5ZnO-0.5P(2)O(5)]-xWO(3), (50-y)ZnO-yWO(3)-50P(2)O(5) and zZnO-20WO(3)-(80-z)P2O5 were studied by Raman and P-31 NMR spectroscopies. In the compositional series (100-x)[0.5ZnO-0.5P(2)O(5)]-xWO(3) homogeneous glasses were prepared in the concentration region 0-60 mol% WO3. Their glass transition temperature (T-g) increases with increasing WO3 content within the range of 460-622 degrees C. P-31 MAS NMR spectra of the glasses show that the phosphate chains are shortened by the incorporation of tungstate structural units. The co-existence of WO4 and WO6 units in the glass structure was seen in glasses with a high ZnO content, while most of the studied glasses contain tungsten atoms in WO6 octahedra. Raman spectra reveal the existence of isolated WO6 units especially in the glasses with a low WO3 content and a high P2O5 content. Clustering of WO6 units by the formation W-O-W bonds takes place in glasses with a high WO3 content as observed from Raman spectra. (en)
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Title
| - Glass-forming ability and structure of glasses in the ZnO-WO3-P2O5 system
- Glass-forming ability and structure of glasses in the ZnO-WO3-P2O5 system (en)
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skos:prefLabel
| - Glass-forming ability and structure of glasses in the ZnO-WO3-P2O5 system
- Glass-forming ability and structure of glasses in the ZnO-WO3-P2O5 system (en)
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skos:notation
| - RIV/00216275:25310/12:39895275!RIV13-GA0-25310___
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/00216275:25310/12:39895275
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - Raman spectra; structure and properties; glass structure; glass forming ability; 31P MAS-NMR (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Gregora, Ivan
- Koudelka, Ladislav
- Montagne, Lionel
- Mošner, Petr
- Delevoye, Laurent
- Šubčík, Jiří
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http://linked.open...ain/vavai/riv/wos
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issn
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number of pages
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http://localhost/t...ganizacniJednotka
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