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The Role of Next-Nearest Neighbors in The Neel Model of Surface Anisotropy for BCC Crystals

  • Robert L. White (a1) and Bruce M. Clemens (a1)

Abstract

We have extended the Neél model of surface anisotropy in b.c.c. crystals to include next nearest neighbor interaction. Fitting the experimental data for Fe (001) and (110) surfaces leads to some pradoxes which cast doubt on the Neél surface anisotropy as the dominant source of surface anisotropy in thin films.

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References

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(1) Neél, L., J. Phys. Radium 15, 225 (1954).
(2) Elmers, H.S. and Gradmann, U., Appl. Phys. A51, 1582 (1990).
(3) Heinrich, B., Cochran, J. D., Arrott, A. S., Purcell, S. T., Urquhart, K. B., Dutcher, J. R., and Egelhoff, W. F. Jr, Appl. Phys. A49, 473 (1989).
(4) Bergter, E., Gradmann, U. and Bergholz, R., Solid State Comm. 51, 565 (1985).

The Role of Next-Nearest Neighbors in The Neel Model of Surface Anisotropy for BCC Crystals

  • Robert L. White (a1) and Bruce M. Clemens (a1)

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