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Structural Properties and Magnetic Behavior in the Pseudobinary Alloys CoFe-CoAl

Published online by Cambridge University Press:  26 February 2011

Nobutoshi Tadachi ,
Hiroki Ishibashi  and
Mineo Kogachi
Nobutoshi Tadachi
Affiliation:
Department of Materials Science, College of Integrated Arts and Sciences, Osaka Prefecture University, Sakai, 599–8531, Japan
Hiroki Ishibashi
Affiliation:
Department of Materials Science, College of Integrated Arts and Sciences, Osaka Prefecture University, Sakai, 599–8531, Japan
Mineo Kogachi
Affiliation:
Department of Materials Science, College of Integrated Arts and Sciences, Osaka Prefecture University, Sakai, 599–8531, Japan
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Abstract

Structural properties and magnetic behavior in pseudobinary alloys CoFe1−x Alx are studied. The B2-phase exists stably over wide ranges of composition and temperature and the Heusler-phase appears around the stoichiometric composition (0.4< x< 0.6 ) below about 973K. The mean magnetic moment in the B2-phase region decreases nearly linearly with increase in x in x > 0.2. Further, it decreases with increase in quenching temperature in x < 0.4, while it remains almost constant in x > 0.4. The mean magnetic moment of Heusler alloy Co2FeAl (x = 0.5) has the value of 1.30μB/atom, nearly the same as in the B2-phase, and shows no remarkable quenching temperature dependence.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 842: Symposium S – Integrative and Interdisciplinary Aspects of Intermetallics , 2004 , S5.5
Copyright
Copyright © Materials Research Society 2005

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References

REFERENCES

1. Fujii, S., Sugimura, S., Ishida, S. and Asano, S., J. Phys.: Condens. Matter. 2, 8583 (1990).Google Scholar
2. Galanakis, I., Dederichs, P.H. and Papanikolaou, N., Phys. Rev. B66, 174429 (2002).Google Scholar
3. Kogachi, M., Minamigawa, S. and Nakahigashi, K., Acta Metall. Mater. 40, 1113 (1992).Google Scholar
4. Kogachi, M., Tanahashi, T., Sturai, Y. and Yamaguchi, M., Scripta Mater. 34, 243 (1996).Google Scholar
5. Kogachi, M. and Tanahashi, T., Scripta Mater. 35, 849 (1996).Google Scholar
6. Kogachi, M. and Haraguchi, T., Mater. Sci. Engineer. A230, 124 (1997).Google Scholar
7. Ishibashi, H., Kogachi, M., Ohba, T., Ren, X. and Otsuka, K., Mater. Sci. Engineer. A329–331, 568 (2002).Google Scholar
8. Harada, K., Ishibashi, H. and Kogachi, M., Mater. Res. Soc. Proc. 753, BB5.28.1 (2003).Google Scholar
9. Ishibashi, H., Harada, K., Kogachi, M. and Noguchi, S., J. Mag. Mag. Mater. 272–276, 774 (2004).Google Scholar
10. Kogachi, M., Tadachi, N., Kohata, H. and Ishibashi, H., Intermetallics 13, (2005) (in press).Google Scholar
11. Kamiya, N., Sakai, T., Kainuma, R., Ohnuma, I. and Ishida, K., Intermetallics 12, 417 (2004).Google Scholar
12. Buschow, K.H.J. and Engen, P.G., J. Mag. Mag. Mater. 25, 90 (1981).Google Scholar
13. PWebster, J., J. Phys. Chem. Solids 32, 1221 (1971).Google Scholar
14. Miura, Y., Nagao, K. and Sturai, M., Phys. Rev. B69, 144413 (2004).Google Scholar