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Modelling of interface structure in Co/Cu superlattices with Fe buffer layer
Russian version
Chuprakov S.A.1
1M.N. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia
Email: chuprakov@imp.uran.ru
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A method of interpreting experimental nuclear magnetic resonance spectra to describe the structure of interlayer boundaries in Co/Cu superlattices with a buffer layer of Fe prepared by magnetron sputtering is proposed. The superlattices have the structural formula glass/Fe(5nm)/[Co(1.5nm)/Cu(1nm)]n/Cr(5nm), n=10, 20, 30, 40. The performed three-dimensional modelling of the structure of interlayer boundaries allows us to make computational NMR spectra that allow us to interpret the experimental spectra. In this work it is demonstrated that in Co/Cu superlattices with the use of Fe buffer layer there is a penetration into copper cobalt at the Co/Cu interface. It is shown that in the interface region "island" copper in cobalt penetrations with a depth of one atomic layer are formed. Keywords: superlattices, interfaces, NMR, modelling.
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