Ultrathin (CoFe/Pt)n multilayers with tuned magnetic properties

Perpendicular magnetic anisotropy (PMA) has been investigated in ultrathin (CoFe [0.2]nm/Pt [0.2]nm)n multilayers. The Pt layers show an fcc crystal structure with a preferred [111] orientation. The multilayers with n=3, 4 show PMA in the as-grown state, which can be enhanced by thermal annealing. H...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2012-07, Vol.324 (14), p.2298-2300
Main Authors: Feng, J.F., Rode, K., Ackland, K., Stamenov, P.S., Venkatesan, M., Coey, J.M.D.
Format: Article
Language:English
Subjects:
Anisotropy
Annealing
Annealing effect
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Crystal structure
Exact sciences and technology
Interface roughness
Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures)
Magnetic properties
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Multilayers
Perpendicular magnetic anisotropy
Physics
Platinum
Stacks
Ultrathin multilayer
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Summary:Perpendicular magnetic anisotropy (PMA) has been investigated in ultrathin (CoFe [0.2]nm/Pt [0.2]nm)n multilayers. The Pt layers show an fcc crystal structure with a preferred [111] orientation. The multilayers with n=3, 4 show PMA in the as-grown state, which can be enhanced by thermal annealing. However, no PMA is observed in the as-grown state with higher repetitions (n>&=5), although it is observed after thermal annealing. For 1=&
ISSN:0304-8853
DOI:10.1016/j.jmmm.2012.02.119