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Polarized neutron channeling as a tool for the investigations of weakly magnetic thin films

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Abstract

We present and apply a new method to measure directly weak magnetization in thin films. The polarization of a neutron beam channeling through a thin film structure is measured after exiting the structure edge as a microbeam. We have applied the method to a three-layer thin film structure acting as a planar waveguide for polarized neutrons. The middle guiding layer is a rare earth based ferrimagnetic material TbCo5 with a low magnetization of about 20 mT. We demonstrate that the channeling method is more sensitive than the specular neutron reflection method.

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Authors and Affiliations

  1. Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Moscow region, 141980, Russia

    S. V. Kozhevnikov

  2. Laboratoire Léon Brillouin UMR12 CEA/CNRS, F-91191, Gif sur Yvette, France

    S. V. Kozhevnikov & F. Ott

  3. Max-Planck-Institut für Festkörperforschung, D-70569, Stuttgart, Germany

    Yu. N. Khaydukov & T. Keller

  4. Max Planck Society Outstation at FRM-II, D-85747, Garching, Germany

    Yu. N. Khaydukov & T. Keller

  5. Helmholtz-Zentrum Berlin für Materialien und Energie, D-12489, Berlin, Germany

    F. Radu

Authors
  1. S. V. Kozhevnikov
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  2. Yu. N. Khaydukov
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  3. T. Keller
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  4. F. Ott
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  5. F. Radu
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Correspondence to S. V. Kozhevnikov.

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Kozhevnikov, S.V., Khaydukov, Y.N., Keller, T. et al. Polarized neutron channeling as a tool for the investigations of weakly magnetic thin films. Jetp Lett. 103, 36–40 (2016). https://doi.org/10.1134/S0021364016010082

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  • DOI: https://doi.org/10.1134/S0021364016010082

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