Neutron diffraction study on the medium and short-range order of ternary chalcogenide glasses.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F99%3A49020110" target="_blank" >RIV/61389005:_____/99:49020110 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Neutron diffraction study on the medium and short-range order of ternary chalcogenide glasses.

Popis výsledku v původním jazyce

Glasses from Ge.sub.x./sub.As.sub.40-x./sub.Se.sub.60./sub., Ge.sub.x./sub.Sb.sub.40-x./sub.S.sub.60./sub. and Ge.sub.x./sub.Sb.sub40-x./sub.Se.sub.60./sub. families have been investigated by neutron diffraction. The well expressed 'first sharp diffraction peak' of the neutron spectra at Q= 10- 14 nm.sub.-1./sub. has been explained by a pseudo-binary model of the structure of studied chalcogenide glasses. The amplitude of this interference maximum increases with Ge-content in all investigated samples. Experimental radial distribution functions show that the basic structural units, GeS(Se).sub.4./sub. tetrahedra and As(Sb)S.sub.3./sub. or As(Sb)Se.sub.3./sub. pyramids persist in glassy state for the whole range of studied compositions. Crystal-like model distribution functions have been used to describe the short-range order observed. A shortening of heteropolar bonds in S-containing glasses as well as an increase of heteropolar bonds length in Se-containing glasses has been found.

Název v anglickém jazyce

Neutron diffraction study on the medium and short-range order of ternary chalcogenide glasses.

Popis výsledku anglicky

Glasses from Ge.sub.x./sub.As.sub.40-x./sub.Se.sub.60./sub., Ge.sub.x./sub.Sb.sub.40-x./sub.S.sub.60./sub. and Ge.sub.x./sub.Sb.sub40-x./sub.Se.sub.60./sub. families have been investigated by neutron diffraction. The well expressed 'first sharp diffraction peak' of the neutron spectra at Q= 10- 14 nm.sub.-1./sub. has been explained by a pseudo-binary model of the structure of studied chalcogenide glasses. The amplitude of this interference maximum increases with Ge-content in all investigated samples. Experimental radial distribution functions show that the basic structural units, GeS(Se).sub.4./sub. tetrahedra and As(Sb)S.sub.3./sub. or As(Sb)Se.sub.3./sub. pyramids persist in glassy state for the whole range of studied compositions. Crystal-like model distribution functions have been used to describe the short-range order observed. A shortening of heteropolar bonds in S-containing glasses as well as an increase of heteropolar bonds length in Se-containing glasses has been found.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GV202%2F97%2FK038" target="_blank" >GV202/97/K038: Středisko základního a aplikovaného výzkumu s termálními neutrony</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

1999

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Science

ISSN

0022-2461

e-ISSN

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Svazek periodika

34

Číslo periodika v rámci svazku

N/A

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

3669-3676

Kód UT WoS článku

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EID výsledku v databázi Scopus

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