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Influence of Surface Magnetism on the Surface Segregation Near TC in NiX Cu1-x Alloys

Published online by Cambridge University Press:  21 February 2011

J. Urias
Affiliation:
Instituto de Física, Universidad Autónoma de San Luis Potosí, 78000 San Luis Potosí, S.L.P. México
J.L. Moran-Lopez
Affiliation:
Departamento de Física, Centro de Investigación y de Estudios Avanzados del IPN, Apdo. Postal 14–740, 07000 México D.F.
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Abstract

The influence of surface magnetization on the surface segregation in binary alloys with one magnetic component is studied. Based in a model in which the local magnetic moment on the ferromagnetic atoms is determined by the local environment, the internal energy is calculated within the mean field approximation. We applied the model to dilute CuNi alloys and we find that magnetism favors the segregation of Ni, contrary to what it is found in the paramagnetic phase.

Type
Research Article
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

1. Helms, C.R., J. Catal. 36, (1975) 114.Google Scholar
2. Watanabe, K., Hashiba, M., and Yamashita, T., Surf. Sci. 61, (1976) 483.Google Scholar
3. Kuijers, F.J. and Ponec, V., Surf. Sci. 68, (1977) 294.Google Scholar
4. Brongersma, H.H., Spornaay, M.J., and Back, T.M., Surf. Sci. 71, (1978) 657.Google Scholar
5. Ng, Y.S., Tsong, T.T. and McLane, S.B. Jr. Phys. Rev. Lett. 42, (1979) 588.Google Scholar
6. Murgai, V. and Parks, R.D., private communication.Google Scholar
7. Mehta, R.S., Dresselhaus, M.S., Dresselhaus, G. and Zeiger, H.J., Phys. Rev. Lett. 43, (1979) 970.Google Scholar
8. Shanabarger, M.R., Phys. Rev. Lett. 43, (1979) 1964.Google Scholar
9. Hamilton, J.C. and Jack, T., Phys. Rev. Lett. 46, (1981) 745.Google Scholar
10. Jaccarino, V. and Walker, L.R., Phys. Rev. Lett. 15, (1965) 258.Google Scholar
11. Perrier, J.P., Tissier, B., and Tournier, R., Phys. Rev. Lett. 24, (1970) 313.Google Scholar
12. Robbins, C.G., Claus, H., and Beck, P.A., Phys. Rev. Lett. 22, (1969) 313.Google Scholar
13. Morán-López, J.L., Brouers, F. and Bennemann, K.H., Phys. Rev. B17, (1978) 263.Google Scholar
14. Urìas and J.L. Morán-López, J., Phys. Rev. B23, (1981) 2759.Google Scholar
15. Alvarado, S.F., Z. Physik B33, (1979) 51.Google Scholar
16. Fader, R., Alvarado, S.F., Tamura, E. and Kisker, E., Submitted to Surface Sci.Google Scholar