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arXiv · 1610.01053

Magnetic state of Nb(1-7nm)/Cu$_{30}$Ni$_{70}$(6nm) superlattices revealed by Polarized Neutron Reflectometry and SQUID magnetometry

Yu. Khaydukov·R. Morari·D. Lenk·V. Zdravkov·D. G. Merkel·B. -K. Seidlhofer·C. Müller·H. A. Krug von Nidda·T. Keller·R. Steitz·A. Sidorenko·S. Horn·R. Tidecks·B. Keimer
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Abstract

We report results of a magnetic characterization of [Cu$_{30}$Ni$_{70}$(6nm)]$_{20}$ (x=1-7nm) superlattices using Polarized Neutron Reflectometry (PNR) and SQUID magnetometry. The study has shown that the magnetic moment of the structures growths almost linearly from H = 0 to H$_{sat}$ = 1.3kOe which is an indirect evidence of antiferromagnetic (AF) coupling of the magnetic moments in neighbouring layers. PNR, however, did not detect any in-plane AF coupling. Taking into account the out-of-plane easy axis of the Cu$_{30}$Ni$_{70}$ layers, this may mean that only the out-of-plane component of the magnetic moments are AF coupled.

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Yu. Khaydukov, R. Morari, D. Lenk, V. Zdravkov, D. G. Merkel, B. -K. Seidlhofer, C. Müller, H. A. Krug von Nidda, T. Keller, R. Steitz, A. Sidorenko, S. Horn, R. Tidecks, B. Keimer. 2016-10-04. Magnetic state of Nb(1-7nm)/Cu$_{30}$Ni$_{70}$(6nm) superlattices revealed by Polarized Neutron Reflectometry and SQUID magnetometry. https://doi.org/10.1088/1742-6596%2F862%2F1%2F012013

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