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arXiv · 1210.0517

Pd magnetism induced by indirect interlayer exchange coupling

W. E. Bailey·A. Ghosh·S. Auffret·E. Gautier·U. Ebels·F. Wilhelm·A. Rogalev
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Abstract

We show that very large paramagnetic moments are created in ultrathin Pd layers through indirect interlayer exchange coupling. Pd $L$-edge x-ray magnetic circular dichroism measurements show Pd moments in [Pd(2.5nm)/Cu(3nm)/Ni$_{81}$Fe$_{19}$(5nm)/Cu(3nm)]$_{20}$ superlattices which are ferromagnetically aligned with the applied field and nearly 3% the size of Pd moments created in directly exchange coupled [Pd(2.5nm)/Ni$_{81}$Fe$_{19}$(5nm)]$_{20}$ superlattices. The induced moment is two orders of magnitude larger than that expected from RKKY exchange acting on the bulk paramagnetic susceptibility of Pd.

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W. E. Bailey, A. Ghosh, S. Auffret, E. Gautier, U. Ebels, F. Wilhelm, A. Rogalev. 2012-10-01. Pd magnetism induced by indirect interlayer exchange coupling. https://doi.org/10.1103/physrevb.86.144403

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