Ferro- and Antiferromagnetic Exchange Coupling in Magnetooptical Bilayers with Planar and Perpendicular Anisotropy

R. Sbiaa, H. Le Gall, Y. Braïk, J. M. Desvignes, S. Yurchenko

Research output: Contribution to journalArticle

14 Citations (Scopus)

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 languageEnglish
Pages (from-to)3274-3276
Number of pages3
JournalIEEE Transactions on Magnetics
Volume31
Issue number6
DOIs
Publication statusPublished - 1995

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Exchange coupling
Coercive force
Anisotropy
Faraday effect
anisotropy
coercivity
Exchange interactions
Rare earths
Transition metals
Magnetization
rare earth elements
transition metals
saturation
magnetization
Experiments
interactions

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy (miscellaneous)

Cite this

Ferro- and Antiferromagnetic Exchange Coupling in Magnetooptical Bilayers with Planar and Perpendicular Anisotropy. / Sbiaa, R.; Le Gall, H.; Braïk, Y.; Desvignes, J. M.; Yurchenko, S.

In: IEEE Transactions on Magnetics, Vol. 31, No. 6, 1995, p. 3274-3276.

Research output: Contribution to journalArticle

Sbiaa, R. ; Le Gall, H. ; Braïk, Y. ; Desvignes, J. M. ; Yurchenko, S. / Ferro- and Antiferromagnetic Exchange Coupling in Magnetooptical Bilayers with Planar and Perpendicular Anisotropy. In: IEEE Transactions on Magnetics. 1995 ; Vol. 31, No. 6. pp. 3274-3276.
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