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Atomic Level Characterization of the Morphology of Phases in Chromindur Magnetic Alloys

Published online by Cambridge University Press:  15 February 2011

M. K Miller ,
P. P. Camus  and
M. G. Hetherington
M. K Miller
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831–6376
P. P. Camus
Affiliation:
Applied Superconductivity Center, University of Wisconsin– Madison, Madison, WI 53706
M. G. Hetherington
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, England
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Abstract

The atom probe field ion microscope has been used to characterize the morphology and determine the compositions of the iron-rich a and chromium-enriched α′ phases produced during isothermal and step cooled heat treatments in a Chromindur II ductile permanent magnet alloy. The good magnetic properties of this material are due to a combination of the composition of the two phases and the isolated nature and size of the ferromagnetic a phase. The morphology of the a phase is produced as a result of the shape of the miscibility gap and the step-cooled heat treatment and is distinctly different from that formed during isothermal heat treatments.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 232: Symposium T – Magnetic Materials: Microstructure and Properties , 1991 , 59
Copyright
Copyright © Materials Research Society 1991

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References

REFERENCES

1. Miller, M.K. and Smith, G.D.W., “Atom Probe Microanalysis: Principles and Applications to Materials Problems”, 1989, pub. Materials Research Society, Pittsburgh, PA. Google Scholar
2. Miller, M.K., J. de Physique, 47–C2. 493 (1986).Google Scholar
3. Soffa, W.A., Brenner, S.S., Camus, P.P. and Miller, M.K., Proc. 29th International Field Emission Symposium, 1982, Gothenburg, pp. 511–518, edited Norden, H. and H. Andren, pub. Almqvist and Wiksell International, Stockholm.Google Scholar
4. Brenner, S.S., Miller, M.K. and Soffa, W.A., Scripta Metall., 16, 831 (1982).Google Scholar
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6. Brenner, S.S., Camus, P.P., Miller, M.K. and Soffa, W.A., Acta Metall., 32 1217 (1984).Google Scholar