Geodesic
The Study of Co-Cu Heterogeneous Alloy Thin Films by NMR Method
Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 3 (2010) no. 1, pp. 70-77

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In the present work we discuss the structure of magnetic layer in magnetron sputtered Co/Cu multilayers with ultrathin magnetic layers (effective layer thicknesses $d_\mathrm{Co}\approx3.5$ and 4.5 Å) obtained by means of $^{59}$Co NMR method. In spite of such a small effective thicknesses of sputtered layers it has been found that the NMR spectra are the superposition of two peaks with central frequencies $f_1=$190–196 MHz and $f_2=$208–213 MHz which obviously correspond to Co-atoms which have 0 and 1 Cu-atom in the nearest-neighbor shell indicating that cobalt preferably forms clusters with large number of atoms involved.
Keywords: nuclear magnetic resonance, Co-Cu heterogeneous alloy, multilayers. 
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Dmitriy L. Khalyapin; Vadim K. Maltsev; Petr D. Kim; Igor A. Turpanov; Anna Ya. Betenkova. The Study of Co-Cu Heterogeneous Alloy Thin Films by NMR Method. Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 3 (2010) no. 1, pp. 70-77. http://geodesic.mathdoc.fr/item/JSFU_2010_3_1_a5/