Extended X-Ray Absorption Fine Structure Study on Bi Modified GeS Bulk Glasses

Abstract

EXAFS measurements have been performed from the Ge K edge and Bi L(111) edge on GeSBi glasses with 6, 8 and 16 Bi at.%, and on crystalline Bi2S3. As expected, Ge is found to be fourfold coordinated with S atoms. It is also found that Bi is only coordinated with S with a coordination number CN-4. This result for the CN-4. of Bi contradicts the conclusion of Elliot and Steel. On the basis of the obtained CN-4. of Bi, it is possible to exclude the presence of Bi2S3 microcrystalline inclusions and to assert that these glasses are homogeneous at the microscopic level.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2001
Accession Number
ADP011547

Entities

People

  • A. Zumailan
  • G. Saffarini
  • J. M. Saiter

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Advanced Materials
  • Chalcogenide Glass
  • Detectors
  • Distribution Functions
  • Electrical Conductivity
  • Experimental Data
  • First Principles Calculations
  • Glass
  • Ionization
  • Ionization Chambers
  • Materials
  • Measurement
  • Scattering
  • Spectra
  • Technical Information Centers
  • X Rays

Fields of Study

  • Physics

Readers

  • Electrochemical Surface Science
  • Materials Science and Engineering.
  • Regression Analysis.