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Magnetic proximity effect in Fe/Pt/Nb multilayers

AuthorsVélez, María ; Martínez Boubeta, Carlos ; Cebollada, Alfonso ; Briones Fernández-Pola, Fernando ; Vicent, J. L.
KeywordsProximity effect
Issue DateFeb-2002
CitationJournal of Magnetism and Magnetic Materials 240(I-3): 580-582 (2002)
Abstractuperconductor/normal metal/ferromagnetic structures have been prepared in order to study the proximity effect between the superconductor and the ferromagnet via the normal metal layer. In particular, [25 nm Nb/Pt/10 nm Fe(0 0 1)] trilayers have been grown by DC sputtering with Pt layer thicknesses in the 2–30 nm range. For the samples with the thinnest Pt layers, the superconducting transition temperature is reduced by more than 1 K, in comparison with a control series of [Nb/Pt] bilayers. As the Pt thickness is increased, the transition temperature also increases, until the effect of the Fe layer is completely screened for a 30 nm thick Pt layer. This sets a length scale for this phenomenon comparable to the normal metal coherence length in the Pt, ξN≈32 nm.
Publisher version (URL)http://dx.doi.org/10.1016/S0304-8853(01)00851-4
Appears in Collections:(IMN-CNM) Artículos
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