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Atom Probe Microanalysis of Superconducting YBa2Cu3O7−x

Published online by Cambridge University Press:  28 February 2011

S. S. Brenner  and
G. L. Kellogg
S. S. Brenner
Affiliation:
Department of Materials Science and Engineering, University of Pittsburgh, Pittsburgh, Pa. 15146
G. L. Kellogg
Affiliation:
Sandia National Laboratories, Albuquerque, N.M. 87185
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Abstract

Superconducting YBa2Cu3O7−x needles prepared from hot-pressed discs of oxide powders were analyzed in a long drift-tube type atom probe. An analyses was made from a randomly located area about 2 nm in diameter. Most of the oxygen field-evaporated as O2+ ions. The measured composition agreed well with that of YBa2Cu3O6.5 except for yttrium which was found to be too high. The oxygen concentration profile showed fluctuations about 2.5 nm apart which must still be clarified.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 947
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

1. Kellogg, G. L. and Brenner, S. S., Appl. Phys Lett. Nov. 30, 1987 Google Scholar
2. Kellogg, G. L. and Brenner, S. S., AVS Topical Conference Nov. 6, 1987, Anaheim Cal. to be published, AVS Series of AIP Conference Proceedings, 1987.Google Scholar