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Evidence for Local Atomic Strain in Pb-Doped Heavy-Metal Fluoride Glasses

Published online by Cambridge University Press:  10 February 2011

L. Niu ,
A. R. Kortan ,
N. Kopylov  and
P. H. Citrin
L. Niu
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
A. R. Kortan
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
N. Kopylov
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
P. H. Citrin
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
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Abstract

Near-edge and extended x-ray absorption fine structure (NEXAFS and EXAFS) measurements have been made as a function of Pb dopant concentration to study the changes in local geometric and electronic structure in several heavy-metal fluoride glasses (Zr/Ba/La/Al/Na, or ZBLAN). A strong correlation is found between the observed glass instability for Pb concentrations > 10% and the structural changes that are measured exclusively around the Ba atoms. Implications of these novel findings are examined in light of the present understanding of these complex glass systems.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 417: Symposium EE – Optoelectronic Materials-Ordering, Composition Modulation, and Self-Assembled … , 1995 , 175
Copyright
Copyright © Materials Research Society 1996

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References

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