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Studies of Exchange Coupling in Fe/Cu/Fe(001) “Loose Spin” Structures

Published online by Cambridge University Press:  15 February 2011

M. Kowalewski ,
B. Heinrich ,
K. Totland ,
J.F. Cochran ,
S. Govorkov ,
D. Atlan ,
K. Myrtle  and
P. Schurer
M. Kowalewski
Affiliation:
Simon Fraser University, Physics Department, Bumaby, Canada
B. Heinrich
Affiliation:
Simon Fraser University, Physics Department, Bumaby, Canada
K. Totland
Affiliation:
Simon Fraser University, Physics Department, Bumaby, Canada
J.F. Cochran
Affiliation:
Simon Fraser University, Physics Department, Bumaby, Canada
S. Govorkov
Affiliation:
Simon Fraser University, Physics Department, Bumaby, Canada
D. Atlan
Affiliation:
Simon Fraser University, Physics Department, Bumaby, Canada
K. Myrtle
Affiliation:
Simon Fraser University, Physics Department, Bumaby, Canada
P. Schurer
Affiliation:
Royal Roads Military College, Victoria, Canada.
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Abstract

The interlayer exchange coupling has been studied in two trilayer structures:

(a) 5.7Fe/5Cu/1FecCu1-c/5Cu/10Fe(001), where c=0.0, 0.1, 0.2, 0.45 0.60

(b) 5.7Fe/5Cu/1CrcCu1-c/5Cu/10Fe(001), where c=0.1, 0.45, 0.8 and 1.0.

The intention of these studies was to identify the role of Fe and Cr atoms in the alloyed FecCu1-c and CrcCu1-c layers on the direct interlayer coupling which is facilitated by the Cu valence electrons. FMR, BLS and MOKE studies were used to determine the interlayer exchange coupling. Mossbauer spectroscopy was used to identify the magnetic state of the Fe atoms in the alloyed layer. The results showed that the presence of foreign atoms inside the Cu spacer significantly decreased the bilinear antiferromagnetic coupling between the Fe layers. In the low concentration limit the Fe and Cr atoms behaved in a similar manner. A significant difference was found in the high concentration limit where the Fe atoms start to be partially magnetically ordered.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 384: Symposium L – Magnetic Ultrathin films, Multilayers and Surfaces , 1995 , 171
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

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