Study of structural changes in amorphous As2Se3 by EXAFS under in situ laser irradiation

被引：39

作者：

Chen, G

Jain, H

Khalid, S

Li, J

Drabold, DA

Elliott, SR

机构：

[1] Lehigh Univ, Dept Mat Sci & Engn, Bethlehem, PA 18015 USA

[2] Brookhaven Natl Lab, Upton, NY 11973 USA

[3] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA

[4] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

来源：

SOLID STATE COMMUNICATIONS | 2001年 / 120卷 / 04期

基金：

美国国家科学基金会;

关键词：

disordered systems; chalcogenide glasses; EXAFS; radiation effects; photoinduced phenomena;

D O I：

10.1016/S0038-1098(01)00354-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have used the Extended X-ray Absorption Fine-Structure (EXAFS) analysis to study the in situ changes in the local atomic structure, which are induced by bandgap laser (wavelength = 690 nm) irradiation of glassy As2Se3. The results indicate both the temporary and permanent light-induced changes in the atomic configuration around the Se but not the As atoms. Thus the Se-Se 'defect' bonds are the primary sites of the light-induced structural changes. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

收藏

页码：149 / 153

页数：5

相关论文

共 18 条

[1] PHOTOSTRUCTURAL CHANGES IN AMORPHOUS AS50SE50 FILMS - AN EXAFS STUDY [J].

ELLIOTT, SR ;

KOLOBOV, AV .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1990, 61 (05) :853-858

[2] REVERSIBLE PHOTODARKENING AND STRUCTURAL-CHANGES IN AS2S3 THIN-FILMS [J].

FRUMAR, M ;

FIRTH, AP ;

OWEN, AE .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1984, 50 (04) :463-475

[3] Percolative growth of photodarkening in amorphous As2S3 films [J].

Ganjoo, A ;

Shimakawa, K ;

Kamiya, H ;

Davis, EA ;

Singh, J .

PHYSICAL REVIEW B, 2000, 62 (22) :14601-14604

[4] PHOTOSTRUCTURAL CHANGES IN BULK CHALCOGENIDE GLASSES - AN EXAFS STUDY [J].

GLADDEN, LF ;

ELLIOTT, SR ;

GREAVES, GN .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1988, 106 (1-3) :189-192

[5] Structural study of amorphous selenium by in situ EXAFS: Observation of photoinduced bond alternation [J].

Kolobov, AV ;

Oyanagi, H ;

Tanaka, K ;

Tanaka, K .

PHYSICAL REVIEW B, 1997, 55 (02) :726-734

[6] Reversible nanocontraction and dilatation in a solid induced by polarized light [J].

Krecmer, P ;

Moulin, AM ;

Stephenson, RJ ;

Rayment, T ;

Welland, ME ;

Elliott, SR .

SCIENCE, 1997, 277 (5333) :1799-1802

[7] First-principles molecular-dynamics study of glassy As2Se3 [J].

Li, J ;

Drabold, DA .

PHYSICAL REVIEW B, 2000, 61 (18) :11998-12004

[8] Direct calculation of light-induced structural change and diffusive motion in glassy As2Se3 [J].

Li, J ;

Drabold, DA .

PHYSICAL REVIEW LETTERS, 2000, 85 (13) :2785-2788

[9] Polarization-dependent, laser-induced anisotropic photocrystallization of some amorphous chalcogenide films [J].

Lyubin, V ;

Klebanov, M ;

Mitkova, M ;

Petkova, T .

APPLIED PHYSICS LETTERS, 1997, 71 (15) :2118-2120

[10] Photomelting of selenium at low temperature [J].

Poborchii, VV ;

Kolobov, AV ;

Tanaka, K .

APPLIED PHYSICS LETTERS, 1999, 74 (02) :215-217