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| Description
| - Lead borophosphate glasses doped with MoO3 were studied in two compositional series (1-x)[50PbO-10B(2)O(3)-40P(2)O(5)]-xMoO(3) with a constant B2O3/P2O5 ratio and (1-x)[50PbO-yB(2)O(3)-(50-y)P2O5]-xMoO(3) with 0, 20, 40 and 60 mol% MoO3. Some physical properties were measured and their structure was studied by P-31, B-11 MAS NMR and Raman spectroscopies. Thermal behaviour was studied by DTA and dilatometry. The glass transition temperature in the series (1-x)[50PbO-10B(2)O(3)-40P(2)O(5)]-xMoO(3) has a maximum at x=0.3, whereas the thermal expansion coefficient has a minimum at x=0.4. The highest thermal stability was observed in glasses with x=0.1-0.2. Structural studies were devoted to an investigation of boron coordination versus MoO3 content and the B2O3/P2O5 ratio. According to the NMR spectra, molybdenum atoms in borophosphate glasses preferentially form P-O-Mo bonds. Tetrahedral BO4 units predominate in the studied borophosphate glasses at a low MoO3 content. B-11 MAS NMR revealed the formation of mixed tetrahedral units B(OP)(4-n)(OMo)(n) in the studied glasses. With an increase in the B2O3/P2O5 ratio and in the MoO3 content, the relative intensities of resonances ascribed to mixed tetrahedral units and trigonal BO3 units increase. B-11 DQ NMR spectra revealed a complex connectivity scheme between the tetrahedral and trigonal units manifested in the formation of BO4 units with B-O-P, B-O-Mo, B-O-B-IV and B-O-B-III bonds.
- Lead borophosphate glasses doped with MoO3 were studied in two compositional series (1-x)[50PbO-10B(2)O(3)-40P(2)O(5)]-xMoO(3) with a constant B2O3/P2O5 ratio and (1-x)[50PbO-yB(2)O(3)-(50-y)P2O5]-xMoO(3) with 0, 20, 40 and 60 mol% MoO3. Some physical properties were measured and their structure was studied by P-31, B-11 MAS NMR and Raman spectroscopies. Thermal behaviour was studied by DTA and dilatometry. The glass transition temperature in the series (1-x)[50PbO-10B(2)O(3)-40P(2)O(5)]-xMoO(3) has a maximum at x=0.3, whereas the thermal expansion coefficient has a minimum at x=0.4. The highest thermal stability was observed in glasses with x=0.1-0.2. Structural studies were devoted to an investigation of boron coordination versus MoO3 content and the B2O3/P2O5 ratio. According to the NMR spectra, molybdenum atoms in borophosphate glasses preferentially form P-O-Mo bonds. Tetrahedral BO4 units predominate in the studied borophosphate glasses at a low MoO3 content. B-11 MAS NMR revealed the formation of mixed tetrahedral units B(OP)(4-n)(OMo)(n) in the studied glasses. With an increase in the B2O3/P2O5 ratio and in the MoO3 content, the relative intensities of resonances ascribed to mixed tetrahedral units and trigonal BO3 units increase. B-11 DQ NMR spectra revealed a complex connectivity scheme between the tetrahedral and trigonal units manifested in the formation of BO4 units with B-O-P, B-O-Mo, B-O-B-IV and B-O-B-III bonds. (en)
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| Title
| - Structure and properties of lead borophosphate glasses doped with molybdenum oxide
- Structure and properties of lead borophosphate glasses doped with molybdenum oxide (en)
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| skos:prefLabel
| - Structure and properties of lead borophosphate glasses doped with molybdenum oxide
- Structure and properties of lead borophosphate glasses doped with molybdenum oxide (en)
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| skos:notation
| - RIV/00216275:25310/12:39895306!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/00216275:25310/12:39895306
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - glass properties; NMR-spectroscopy; phosphate-glasses; Raman spectroscopy (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
| |
| 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
| - Černošek, Zdeněk
- Koudelka, Ladislav
- Montagne, Lionel
- Mošner, Petr
- Revel, Bertrand
- Rösslerová, Ivana
- Tricot, Gregory
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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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