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Evolution of Structure with Fe Layer Thickness in low Dimensional Fe/Tb Multilayered Structures

Published online by Cambridge University Press:  25 February 2011

V. G. Harris ,
K. D. Aylesworth ,
W. T. Elam ,
N. C. Koon ,
R. Coehoorn  and
W. Hoving
V. G. Harris
Affiliation:
Naval Research Laboratory, Washington, D.C. 20375–5000
K. D. Aylesworth
Affiliation:
Naval Research Laboratory, Washington, D.C. 20375–5000
W. T. Elam
Affiliation:
Naval Research Laboratory, Washington, D.C. 20375–5000
N. C. Koon
Affiliation:
Naval Research Laboratory, Washington, D.C. 20375–5000
R. Coehoorn
Affiliation:
Philips Research Laboratory, Eindhoven, The Netherlands
W. Hoving
Affiliation:
Philips Research Laboratory, Eindhoven, The Netherlands
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Abstract

The atomic structure of a series of low-dimensional Fe/Tb multilayered structures has been explored using a conversion-electron, extended x-ray absorption fine structure (EXAFS) technique. A structural transition from a close-packed amorphous structure to a body-centered crystalline structure is detected to occur over an Fe layer thickness range of 12.5 Å to 15.0 Å (Tb thickness is held constant at 4.5 Å). Magnetic properties, specifically, magnetization, anisotropy field, and Kerr rotation angle, are measured and found to change significantly in response to this transition. Exploitation of the polarization properties of synchrotron radiation allowed for the description of the atomic structure both perpendicular and parallel to the sample plane.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 238: Symposium Cb – Structure and Properties of Interfaces in Materials , 1991 , 635
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

[1] Chen, H. and Heald, S.M., Sol. St. Ionics, 32–33, 924 (1989).Google Scholar
[2] Elam, W.T., Kirkland, J.P., Neiser, R.A., and Wolf, P.D., Phys. Rev. B 38, 26 (1988).CrossRefGoogle Scholar
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[4] Sayers, D.E. and Bunker, B.A., Chapter 6 in X-Ray Absorption: Principles. Applications. Techniques of EXAFS. SEXAFS and XANES. Koningsberger, D.C. and Prins, R. (editors), (John Wiley & Sons, New York), 1988.Google Scholar
[5] see for example: Harris, V.G., Elam, W.T. and Vittoria, C., IEEE Trans. on Magn., 27, 3620(1991), and references contained within.Google Scholar
[6] Theoretical EXAFS data were generated using FEFF codes, for details of theory and fits to experimental data see: Rehr, J.J., Mustre, J., Labinsky, S.I., and Albers, R.C., J. Am. Chem. Soc., 113, 1 (1991).Google Scholar