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Defects in Metals–Detected by Spin Precession Methods

Published online by Cambridge University Press:  15 February 2011

TH. Wichert  and
E. Recknagel
TH. Wichert
Affiliation:
Fakultät für Physik, Universität Konstanz, D–7750 Konstanz, Fed. Rep.Germany
E. Recknagel
Affiliation:
Fakultät für Physik, Universität Konstanz, D–7750 Konstanz, Fed. Rep.Germany
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Abstract

Recent advances in the study of point defects and small defect clusters by nuclear methods will be reviewed. Suitable radioactive atoms which fulfill the requirements of spin precession techniques are introduced into solids, where they are used as microscopic probes to investigate their immediate surrounding. Trapping, detrapping or annealing of defects is reflected by changes of the hyperfine interaction between the nuclear moments of the probe atoms and the electromagnetic fields of the defects. The interaction is extracted from a time differential spin precession pattern or–more obviously–from the Fourier transform of it, which can be regarded as the resonance spectrum of the involved frequencies. It allows a distinct recognition of different defects and comprises detailed information about their structural properties. Experimental data on interstitials, vacancies and clusters in metals will be quoted as illustrations for the scope of information, which can be achieved by hyperfine interaction studies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 3: Symposium – Nuclear and Electron Resonance Spectroscopies Applied to Materials Science , 1980 , 211
Copyright
Copyright © Materials Research Society 1981

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References

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