Publikace detail

Atomic structure of As2S3-Ag chalcogenide glasses

Rok: 2009

Druh publikace: článek v odborném periodiku

Název zdroje: Journal of Physics: Condensed Matter

Název nakladatele: Institute of Physics Publishing Ltd

Místo vydání: Bristol

Strana od-do: 3958011-3958018

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze
eng	Atomic structure of As2S3-Ag chalcogenide glasses	(As0.4S0.6)100-Ag-x(x) glasses have been studied with high-energy x-ray diffraction, neutron diffraction and extended x-ray absorption spectroscopy at As and Ag K-edges. Experiments were modelled with the reverse Monte Carlo simulation method. Analysis of the partial pair correlation functions and coordination numbers extracted from the model atomic configurations revealed that silver preferentially bonds to sulfur in the As2S3-Ag ternary glasses, which results in the formation of homoatomic As-As bonds. Upon the addition of Ag, a small proportion of Ag-As bonds are formed in all three ternary compositions, the direct Ag-Ag bonds appear only in the glass with the highest Ag content. Similar to the g-As2S3 binary, the mean coordination number of arsenic is close to three, and that of sulfur is close to two, in the As2S3-Ag ternary glasses. The first sharp diffraction peak on the total structure factors of As2S3 binary and (As0.4S0.6)(100-x)Ag-x ternary glasses is related to the As-As and As-S correlations.	ELECTRICAL-PROPERTIES;NEUTRON-DIFFRACTION;AMORPHOUS AS2S3;THIN-FILMS;AG;CONDUCTIVITY;SCATTERING;TRANSPORT

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