Journal Article

PUBDB-2015-00326

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Short range order in Ge–As–Se glasses

Pethes, I. ; Kaban, I.>Extern* ; Wang, R.-P. ; Luther-Davies, B. ; Jóvári, P. (Corresponding Author)>Extern*

2015
Elsevier Lausanne

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Please use a persistent id in citations: doi:10.1016/j.jallcom.2014.11.002

Abstract: The structure of GexAs10Se90−x (x = 10, 17.5, 22.5, 27.5, 30, 35) glasses as well as some other compositions extensively used in infrared optics, e.g. GASIR® (Ge22As20Se58) and AMTIR-1 (Ge33As12Se55) has been investigated by X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS) measurements at the Ge, As and Se K-edges. Structural models have been obtained by fitting simultaneously XRD and EXAFS data by the reverse Monte Carlo simulation technique. Unlike other IV–V–VI glasses (e.g. Ge–As–S, Ge–Sb–Te, Ge–Sb–Se, Ge–As–Te) Ge–As–Se glasses are characterized by the lack of preferential bonding and behave as random covalent networks: Ge–Ge, Ge–As or As–As bonds can be found in Se-rich compositions while Se–Se bonding remains in strongly Se-deficient glasses as well.

Note: (c) Elsevier B.V.

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Contributing Institute(s):

1. DOOR-User (DOOR)

Research Program(s):

1. 6G3 - PETRA III (POF3-622) (POF3-622)
2. FS-Proposal: II-20100351 (II-20100351) (II-20100351)
3. FS-Proposal: II-20100137 EC (II-20100137-EC) (II-20100137-EC)

Experiment(s):

1. DORIS Beamline BW5 (DORIS III)
2. DORIS Beamline X1 (DORIS III)
3. PETRA Beamline P07 (PETRA III)

Appears in the scientific report 2015

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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