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

KHAYDUKOV, Yu.; MORARI, R.; LENK, D.; ZDRAVKOV, V.; MERKEL, D. G.; SEIDLHOFER, B.-K.; MÜLLER, C.; NIDDA Von, H.-A. Krug; KELLER, T.; STEITZ, R.; SIDORENKO, A.; HORN, S.; TIDECKS, R.; KEIMER, B.

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

KHAYDUKOV, Yu.; MORARI, R.; LENK, D.; ZDRAVKOV, V.; MERKEL, D. G.; SEIDLHOFER, B.-K.; MÜLLER, C.; NIDDA Von, H.-A. Krug; KELLER, T.; STEITZ, R.; SIDORENKO, A.; HORN, S.; TIDECKS, R.; KEIMER, B.

URI: https://doi.org/10.1088/1742-6596/862/1/012013
http://repository.utm.md/handle/5014/12098

Date: 2017

Abstract:

We report results of a magnetic characterization of [Cu30Ni70(6nm)/Nb(x)]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 Hsat = 1.3kOe which can be interpreted as 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 Cu30Ni70 layers, this may mean that only the out-of-plane components of the magnetic moments are AF coupled.