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Chemical Effects Induced by Low-Energy Particle Beams in Fluorozirconate Glasses

Published online by Cambridge University Press:  21 February 2011

Giovanni Marletta  and
Monica Ferraris
Giovanni Marletta
Affiliation:
Dipartimento di Scienze Chimiche, Università di Catania, Viale A.Doria 6, 95125 CATANIA (ITALY)
Monica Ferraris
Affiliation:
CSELT, via Reiss Romoli 274, TORINO (ITALY)
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Abstract

The modification of the chemical structure of fluorozirconate glasses (ZBLAN) with Ar ion and atom beams of low energy (2–10 key) has been studied in comparison with the damage produced in the starting polycrystalline ZrF4 and BaF2. A variety of reduced chemical states of Zr is produced in ZrF4 as well as in ZBLAN glasses, including metallic Zr0 state. A strong enhancement of the amount of the metallic Zr formed under irradiation is observed in ZBLAN, while it is present only as trace in the irradiated pure ZrF4 samples. The reported effect is tentatively attributed to the presence of Ba ions in the glass network which could prompt the self-trapping of radiation-induced defects at the Zr sites, involving their progressive reduction

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 152: Symposium H – Optical Materials: Processing and Science , 1989 , 143
Copyright
Copyright © Materials Research Society 1989

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References

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