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Title: Structure of rare-earth chalcogenide glasses by neutron and x-ray diffraction

The method of neutron diffraction with isomorphic substitution was used to measure the structure of the rare-earth chalcogenide glasses (R 2X 3) 0.07(Ga 2X 3) 0.33(GeX 2) 0.60 with R = La or Ce and X = S or Se. X-ray diffraction was also used to measure the structure of the sulphide glass. The results are consistent with networks that are built from GeX 4 and GaX 4 tetrahedra, and give R-S and R-Se coordination numbers of 8.0(2) and 8.5(4), respectively. The minimum nearest-neighbour R-R distance associated with rare-earth clustering is discussed.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [4]
  1. Univ. of Bath, Bath (United Kingdom). Dept. of Physics; Univ. of Bristol, Bristol (United Kingdom). School of Earth Sciences
  2. Univ. of Bath, Bath (United Kingdom). Dept. of Physics; Corning Incorporated, Corning, NY (United States). Science and Technology Division
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS), X-Ray Science Division; Argonne National Lab. (ANL), Argonne, IL (United States). Intense Pulsed Neutron Source
  4. Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Lab., ISIS Neutron Source
Publication Date:
Grant/Contract Number:
AC02-06CH11357; EP/C003594/1
Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 29; Journal Issue: 22; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC); Engineering and Physical Sciences Research Council (EPSRC)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 36 MATERIALS SCIENCE
OSTI Identifier:
1427538