Structure and properties of potassium niobato-borophosphate glasses.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F08%3A00007608" target="_blank" >RIV/00216275:25310/08:00007608 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Structure and properties of potassium niobato-borophosphate glasses.
Original language description
Bulk glasses of the series (1-x)[0.5K2O-0.1B2O3-0.4P2O5]-xNb2O5 with x = 0-45.7 mol% Nb2O5 were prepared by slow cooling in air and investigated by Raman, 31P, and 11B MAS NMR spectroscopy. The incorporation of Nb2O5 into the parent borophosphate glass results in a substantial increase in the glass transition temperature and chemical durability of glasses. Raman spectra showed that Nb atoms form distorted NbO6 octahedra, which are isolated at low Nb2O5 content, whereas at higher Nb2O5 content they formclusters. 11B NMR spectra of the glasses revealed the interaction between Nb2O5 and BO4 tetrahedral units, which results in a partial transformation of tetrahedral BO4 units to trigonal BO3 units and the formation of mixed B(OP)4-n(ONb)n units.
Czech name
Struktura a vlastnosti niobáto-borofosfátových skel.
Czech description
Práce se zabývá studiem stuktury skel kompoziční řady (1-x)[0.5K2O-0.1B2O3-0.4P2O5]-xNb2O5 (x = 0-45.7 mol% Nb2O5) připravených pomalým chladnutím skelné taveniny na vzduchu. Struktura skel byla studována pomocí Ramanovy, 31P a 11B MAS NMR spektroskopie.

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JH - Ceramics, fire-proof materials and glass
OECD FORD branch
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Project
<a href="/en/project/GA104%2F07%2F0315" target="_blank" >GA104/07/0315: Phosphate and borophosphate glasses with heavy metal oxides for applications in optoelectronics and photonics.</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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