A structural study of gallium lanthanum sulphide glass bulk and thin films by x-ray absorption fine structure spectroscopy
A structural study of gallium lanthanum sulphide glass bulk and thin films by x-ray absorption fine structure spectroscopy
Atomic-scale structure changes in gallium lanthanum sulphide bulk glass and ablation-deposited thin films have been studied by the x-ray absorption fine-structure (EXAFS) technique. EXAFS spectra have been recorded at the sulphur and gallium K edges, and the lanthanum L3 edge, and this has allowed us to construct a detailed picture of the local structure in bulk glass and thin films. The EXAFS results indicate that there is chemical disorder in the structural network of the GLS thin films. although chemical ordering is predominant in bulk GLS glass. The existence of wrong bonds, i.e. Ga-Ga and S-S bonds, in the structure has been discussed and correlated with optical absorption experiments undertaken on the same samples to provide a consistent picture of the local structure.
6217-6230
Asal, R.
490148c2-6ad7-4a75-8221-2d15090d88b2
Rivers, P.E.
c2edc418-b6ff-4dc2-a9d6-e7556014f14c
Rutt, H.N.
e09fa327-0c01-467a-9898-4e7f0cd715fc
July 1997
Asal, R.
490148c2-6ad7-4a75-8221-2d15090d88b2
Rivers, P.E.
c2edc418-b6ff-4dc2-a9d6-e7556014f14c
Rutt, H.N.
e09fa327-0c01-467a-9898-4e7f0cd715fc
Asal, R., Rivers, P.E. and Rutt, H.N.
(1997)
A structural study of gallium lanthanum sulphide glass bulk and thin films by x-ray absorption fine structure spectroscopy.
Journal of Physics: Condensed Matter, 9 (29), .
(doi:10.1088/0953-8984/9/29/007).
Abstract
Atomic-scale structure changes in gallium lanthanum sulphide bulk glass and ablation-deposited thin films have been studied by the x-ray absorption fine-structure (EXAFS) technique. EXAFS spectra have been recorded at the sulphur and gallium K edges, and the lanthanum L3 edge, and this has allowed us to construct a detailed picture of the local structure in bulk glass and thin films. The EXAFS results indicate that there is chemical disorder in the structural network of the GLS thin films. although chemical ordering is predominant in bulk GLS glass. The existence of wrong bonds, i.e. Ga-Ga and S-S bonds, in the structure has been discussed and correlated with optical absorption experiments undertaken on the same samples to provide a consistent picture of the local structure.
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Published date: July 1997
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Local EPrints ID: 77761
URI: http://eprints.soton.ac.uk/id/eprint/77761
ISSN: 0953-8984
PURE UUID: 56884eba-2835-4962-b573-c20b3abf8699
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Date deposited: 11 Mar 2010
Last modified: 13 Mar 2024 23:59
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Author:
R. Asal
Author:
P.E. Rivers
Author:
H.N. Rutt
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