Abstract
Macroscopic ferro- (F) and antiferromagnetic (AF) exchange couplings-A12M1.M2 between a planar GdFeCo film 1 and a perpendicular anisotropy DyFeCo film 2 have been investigated from the magnetization processes of the bilayer as observed from Faraday rotation measurements. Whatever the F or AF coupling, the microscopic exchange interaction between the rare-earths and the transition metals at the interface induces mutual effects with a reduction of the coercivity Hc2 and the squareness Mr2/Ms2 of the » perpendicular « layer and a reduction of the saturation field Hs1, but an increase of the coercivity Hc1 of the planar layer. Experiments performed in single planar and perpendicular layers and in both pseudo F and AF bilayers are in agreement with our theoretical model which gives the possibility to deduce the macroscopic exchange constant A12.
Original language | English |
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Pages (from-to) | 3274-3276 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 31 |
Issue number | 6 |
DOIs | |
Publication status | Published - Nov 1995 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering