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Effect of thermal aging on the Néel temperature of a Fe–Cr–Ni–Mo alloy

Published online by Cambridge University Press:  31 January 2011

C. H. Shek ,
M. W. Lai  and
J. K. L. Lai
C. H. Shek*
Affiliation:
Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
M. W. Lai
Affiliation:
Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
J. K. L. Lai
Affiliation:
Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
*
a)Address all correspondence to this author.apchshek@cityu.edu.hk
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Abstract

Numerous previous investigations on the magnetic properties of Fe–Cr–Ni or similar alloys show that the Néel temperature of this class of material is usually in the range 20–40 K and never exceeds 60 K. In this paper, we report on the discovery that the Ne’el temperature of a Fe–Cr–Ni–Mo alloy can be substantially increased to approximately 80–100 K by long-term thermal aging at 800 °C and above. This discovery has raised many questions on the detailed mechanism of magnetic transition on this class of material and is expected to open up a new line of investigation for researchers in this field.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 4 , April 2002 , pp. 879 - 883
Copyright
Copyright © Materials Research Society 2002

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