Medium range order in lead borophosphate glasses
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F06%3A00004174" target="_blank" >RIV/00216275:25310/06:00004174 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Medium range order in lead borophosphate glasses
Original language description
The structure of 50PbO-xB2O3(50-x)P2O5 glasses with x = 0-25 mol% B2O3 was refined by Raman and 11B MQMAS NMR investigations. The analysis of Raman spectra, using the concentration step of 2 mol% B2O3 within the range of 0-12 mol% B2O3, showed that the evolution of changes in the type of oxygen bridges can be observed from the Raman bands within the range of 600-800 cm-1. 11B MQMAS NMR spectra of glasses with x = 15, 20 and 25 mol% B2O3 revealed the presence of two BO4 sites in these glasses. The firstsite B1O4, characterized by the chemical shift of d = -3.8 - (-3.4) ppm, was assigned to tetrahedral B(OP)4 structural units. Within the concentration range x = 15-25 mol% B2O3 the site B1O4 is gradually replaced by the site B2O4 with the chemical shiftof d = -1.8 - (-1.1) ppm. This second site we assigned to the presence of B(OP)3(OB) units in which the central boron atom is linked to three PO4 groups and one BO3 group.
Czech name
Uspořádání středního dosahu v olovnatých borofosforečnanových sklech
Czech description
Byla studována struktura borofosfátových skel systému 50PbO-xB2O3(50-x)P2O5 (x = 0-25 mol% B2O3) pomocí 11B MQMAS NMR a Ramanovy spektroskopie.
Classification
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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Result continuities
Project
<a href="/en/project/GA104%2F04%2F0711" target="_blank" >GA104/04/0711: Borophosphate and phosphate glasses and glass-ceramics with special theromechanical properties</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2006
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physics and Chemistry of Glasses: European Journal of Glass Science and Technology B
ISSN
0031-9090
e-ISSN
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Volume of the periodical
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Issue of the periodical within the volume
47
Country of publishing house
GB - UNITED KINGDOM
Number of pages
6
Pages from-to
471-475
UT code for WoS article
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EID of the result in the Scopus database
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