| Issue |
Europhys. Lett.
Volume 42, Number 5, June 1998
|
|
|---|---|---|
| Page(s) | 565 - 570 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1998-00288-6 | |
| Published online | 01 September 2002 | |
Interlayer coupling and magnetoresistance in Ir/Co multilayers
Institut für Physik, Universität Augsburg - D-86135 Augsburg,
Germany
Received:
11
August
1997
Accepted:
14
April
1998
Fcc(111) oriented Ir/Co multilayers were prepared to study
their magnetic and magnetotransport properties. The superlattice structure
was characterized by X-ray diffraction. Results measured for magnetization
and magnetoresistance (
) exhibit an oscillatory interlayer exchange
coupling with a period of about 
nm (4.5 monolayers). The coupling strength
JAF and the largest obtained are 
and
4% (at 10 K), respectively.
The observed oscillatory behavior can be attributed to an interaction of
separated Co magnetic layers, which must be some sort of RKKY coupling. Using
this concept, we find a match of the measured oscillation period with the
relevant wave vector on the Fermi surfaces of Ir.
PACS: 75.70.-i – Magnetic films and multilayers
© EDP Sciences, 1998
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