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Magnetic state of Nb(1-7nm)/Cu₃₀Ni₇₀(6nm) superlattices revealed by Polarized Neutron Reflectometry and SQUID magnetometry

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arxiv 1610.01053 v1 pith:KPL752RD submitted 2016-10-04 cond-mat.mes-hall

Magnetic state of Nb(1-7nm)/Cu₃₀Ni₇₀(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. M\"uller , H. A. Krug von Nidda
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T. Keller R. Steitz A. Sidorenko S. Horn R. Tidecks B. Keimer
This is my paper
classification cond-mat.mes-hall
keywords magneticcouplinglayersmagnetometrymomentsneutronout-of-planepolarized
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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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