About: Structure and properties of titanium-zinc borophosphate glasses

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The structure of 50ZnO-10B2O3-40P2O5+xTiO2 glasses prepared by slow cooling (for x = 0-24 mol%TiO2) or by quenching (for x = 28-64 mol%TiO2) was studied by Raman, 31P and 11B MAS NMR spectroscopy. TiO2 incorporates into the glass structure which results in a decrease in the molar volume and an increase in the glass transition temperature. According to Raman spectra Ti atoms form distorted TiO6 octahedra and their incorporation into the structural network results in the depolymerization of phosphate chains. 11B NMR spectra of the glasses with increasing TiO2 content show gradual changes from one symmetrical signal of B(OP)4 units to a broad complex signal which was separated into four signals ascribed to four different types of BO4 units. With increasing TiO2 content a part of boron atoms changes from tetrahedral BO4 to trigonal BO3 units, which is ascribed to the formation of TiO6 units in the glass structure. The structure of 50ZnO-10B2O3-40P2O5+xTiO2 glasses prepared by slow cooling (for x = 0-24 mol%TiO2) or by quenching (for x = 28-64 mol%TiO2) was studied by Raman, 31P and 11B MAS NMR spectroscopy. TiO2 incorporates into the glass structure which results in a decrease in the molar volume and an increase in the glass transition temperature. According to Raman spectra Ti atoms form distorted TiO6 octahedra and their incorporation into the structural network results in the depolymerization of phosphate chains. 11B NMR spectra of the glasses with increasing TiO2 content show gradual changes from one symmetrical signal of B(OP)4 units to a broad complex signal which was separated into four signals ascribed to four different types of BO4 units. With increasing TiO2 content a part of boron atoms changes from tetrahedral BO4 to trigonal BO3 units, which is ascribed to the formation of TiO6 units in the glass structure. (en) Byla studována struktura a vlastnosti borofosforečnanových skel připravených v kompoziční řadě 50ZnO-10B2O3-40P2O5+xTiO2 připravených pomalým ( x = 0-24 mol%TiO2) a rychlým (x = 28-64 mol%TiO2) chlazením taveniny. (cs)
Title	Structure and properties of titanium-zinc borophosphate glasses Struktura a vlastnosti titaničito-zinečnatých borofosfátových skel (cs) Structure and properties of titanium-zinc borophosphate glasses (en)
skos:prefLabel	Structure and properties of titanium-zinc borophosphate glasses Struktura a vlastnosti titaničito-zinečnatých borofosfátových skel (cs) Structure and properties of titanium-zinc borophosphate glasses (en)
skos:notation	RIV/00216275:25310/05:00002863!RIV08-MSM-25310___
http://linked.open.../vavai/riv/strany	1837-1843
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA104/04/0711), Z(MSM0021627501)
http://linked.open...iv/cisloPeriodika	178
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Koudelka, Ladislav Mošner, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Pardubice / Fakulta chemicko-technologická
http://linked.open...dnocenehoVysledku	544964
http://linked.open...ai/riv/idVysledku	RIV/00216275:25310/05:00002863
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	borophosphate glasses; Raman spectra; NMR spectra; titanium dioxide; glass structure (en)
http://linked.open.../riv/klicoveSlovo	glass structure borophosphate glasses Raman spectra titanium dioxide NMR spectra
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[3E7DD05AA8B3]
http://linked.open...i/riv/nazevZdroje	Journal of Solid State Chemistry
http://linked.open...in/vavai/riv/obor	JH
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Borophosphate and phosphate glasses and glass-ceramics with special theromechanical properties
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	1
http://linked.open...iv/tvurceVysledku	Pospíšil, Jaroslav Koudelka, Ladislav Montagne, Lionel Mošner, Petr Palavit, Gerard
http://linked.open...n/vavai/riv/zamer	Aimed preparation of special compounds and materials and investigation of their physical and chemical properties and supramolecular structures
issn	0022-4596
number of pages	7 (xsd:int)
http://localhost/t...ganizacniJednotka	25310

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