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Structure Characterization of Metamict and Glassy Lead Phosphates

Published online by Cambridge University Press:  25 February 2011

A. N. Sreeram  and
L. W. Hobbs
A. N. Sreeram
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology Cambridge, Massachusetts 02139, USA
L. W. Hobbs
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology Cambridge, Massachusetts 02139, USA
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Abstract

Single crystals of Pb2P2O7 (beam stable under 200 kV TEM electrons to a fluence > 1027 e/m2 and an ionizing dose > 1014 Gy) were rendered metamict (amorphized) with ion-implantation (100 kV P+ ions with several fluences. Pb2P2O7 and PbO·P2O5 glasses were also ion implanted at identical fluences. Radial distribution functions of metamict and glassy phosphates are being generated using energy filtered electron diffraction (EFED) data collected on 100 kV field emission STEM (VG HB-5). Ion-implanted lead phosphate glasses exhibit a significant difference in their FSDP as compared to the non-irradiated ones. XTEM results also show that ion-beam damage layer was around 200 nm deep. XTEM-HREM structure images of ion-implanted single crystals, along with their optical diffraction analysis will be presented and briefly discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 279: Symposium A – Beam-Solid Interactions–Fundamentals and Applications , 1992 , 559
Copyright
Copyright © Materials Research Society 1993

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References

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