Structural analysis and magnetic properties of ( Pt / Co ) 3 / Pt tPt / IrMn multilayers

Structural and magnetic investigations of Ta 3 nm / Pt 2 nm / Co 0.4 nm 3 / Pt tPt / IrMn 7 nm 7 / Pt 10 nm multilayers with t Pt = 0 and t Pt = 0.4 nm have been carried out using x-ray reflectometry, tomographic atom probe, and superconducting quantum interference device magnetometry. The structura...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2009-05, Vol.79 (17), Article 174434
Main Authors: Lechevallier, L., Zarefy, A., Lardé, R., Chiron, H., Le Breton, J.-M., Baltz, V., Rodmacq, B., Dieny, B.
Format: Article
Language:English
Subjects:
Condensed Matter
Physics
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Summary:Structural and magnetic investigations of Ta 3 nm / Pt 2 nm / Co 0.4 nm 3 / Pt tPt / IrMn 7 nm 7 / Pt 10 nm multilayers with t Pt = 0 and t Pt = 0.4 nm have been carried out using x-ray reflectometry, tomographic atom probe, and superconducting quantum interference device magnetometry. The structural investigations show that the Co/ IrMn interface is more diffuse in the absence of the Pt spacer. The consequences on the magnetic properties are discussed. The exchange-bias field and the anisotropy direction of these two specimens are analyzed in comparison to Ta 3 nm / Pt 2 nm / Co 0.4 nm 3 / Pt tPt / IrMn 7 nm / Pt 10 nm multilayers containing only one ferromagnetic/ antiferromagnetic repeat and correlated with the structural investigations.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.79.174434