Raman studies and some physical properties of selected (PbO)x(Nb2O5)y(TeO2)1-x-y glasses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F10%3A39881473" target="_blank" >RIV/00216275:25310/10:39881473 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389013:_____/10:00347231

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Raman studies and some physical properties of selected (PbO)x(Nb2O5)y(TeO2)1-x-y glasses

Popis výsledku v původním jazyce

Selected Nb2O5-TeO2, PbO-Nb2O5-TeO2 and PbO-TeO2 glasses were prepared from very pure oxides.The glass-transition temperature increased from 281 to 411 °C with an increase in Nb2O5 content and,simultaneously, the coefficient of thermal expansion decreased from 21 to 11 ppm/°C. Raman scattering measurements indicated that TeO4 trigonal bipyramids, TeO3+1, TeO3 trigonal unit and NbO6 octahedra were the basic structural units of Nb2O5-TeO2 and PbO-Nb2O5-TeO2 glasses. The optical band gap was determined inthe region 3.39-3.60 eV and the coefficient of the temperature dependence of the optical gap for the temperatures between 30 and 250 °C in the region 4.1 x 10(-4) - 6.8 x 10(-4) eV/K was found. Non-linear refractive index of the studied glasses was estimated from the optical gap values at around 0.85 x 10-11 esu.

Název v anglickém jazyce

Raman studies and some physical properties of selected (PbO)x(Nb2O5)y(TeO2)1-x-y glasses

Popis výsledku anglicky

Selected Nb2O5-TeO2, PbO-Nb2O5-TeO2 and PbO-TeO2 glasses were prepared from very pure oxides.The glass-transition temperature increased from 281 to 411 °C with an increase in Nb2O5 content and,simultaneously, the coefficient of thermal expansion decreased from 21 to 11 ppm/°C. Raman scattering measurements indicated that TeO4 trigonal bipyramids, TeO3+1, TeO3 trigonal unit and NbO6 octahedra were the basic structural units of Nb2O5-TeO2 and PbO-Nb2O5-TeO2 glasses. The optical band gap was determined inthe region 3.39-3.60 eV and the coefficient of the temperature dependence of the optical gap for the temperatures between 30 and 250 °C in the region 4.1 x 10(-4) - 6.8 x 10(-4) eV/K was found. Non-linear refractive index of the studied glasses was estimated from the optical gap values at around 0.85 x 10-11 esu.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Optical Materials

ISSN

0925-3467

e-ISSN

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Svazek periodika

32

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000279620900021

EID výsledku v databázi Scopus

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