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Structural Properties Of Co/Re Superlattices

Published online by Cambridge University Press:  25 February 2011

Y. Huai ,
R. W. Cochrane ,
Y. Shi ,
H. E. Fischer  and
M. Sutton
Y. Huai
Affiliation:
Département de Physique et Groupe de Recherche sur les Couches Minces, Université de Montréal, C.p. 6128, Suce. A, Montréal, Québec, CanadaH3C 3J7
R. W. Cochrane
Affiliation:
Département de Physique et Groupe de Recherche sur les Couches Minces, Université de Montréal, C.p. 6128, Suce. A, Montréal, Québec, CanadaH3C 3J7
Y. Shi
Affiliation:
Dept. of Physics, Centre for Physics of Materials, McGill University, 3600University Street, Montréal, Québec, CanadaH3A 2T8
H. E. Fischer
Affiliation:
Dept. of Physics, Centre for Physics of Materials, McGill University, 3600University Street, Montréal, Québec, CanadaH3A 2T8
M. Sutton
Affiliation:
Dept. of Physics, Centre for Physics of Materials, McGill University, 3600University Street, Montréal, Québec, CanadaH3A 2T8
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Abstract

The structures of equal-thickness Co/Re multilayer films and several Co/Re bilayer films have been investigated by X-ray diffraction at low and high angles. Analysis of low-angle reflectivity data from bilayer films indicates that interfacial intermixing is limited to three monolayers and that the two interfacial configurations are different. The high-angle X-ray diffraction data show that multilayer films have coherent interfaces and a highly textured structure with hep [002] orientations normal to the film plane for periods 21 Å ≤ Λ ≤220 Å. Detailed structures have been determined by fitting the X-ray spectra to calculated ones using a trapezoidal model. The results indicate that samples with 42 Å≤ Λ ≤220 Å have relatively sharp interfaces, in good agreement with the bilayer results. In addition, an out-of-plane expansion of the Co (002) layer is observed in samples with large Λ and results from structural disorder leading to a reduced atomic density. For Λ <21 Å the interfaces arise from the rougher surfaces of the deposited layers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 238: Symposium Cb – Structure and Properties of Interfaces in Materials , 1991 , 671
Copyright
Copyright © Materials Research Society 1992

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References

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