Study of the in-plane magnetic structure of thin magnetic multilayers at phase boundary of percolation transition
Neutron polarizing supermirrors are increasingly important devices for polarized neutron scattering experiments and need to extend the bandwidth of the polarization to meet a variety of research demands. The extension of the bandwidth is limited by the magnetic phase transition occurring at a certain thickness of the magnetic layer. The current proposal is aimed to verify whether this phase transition is understood by the percolation theory. Off-specular and grazing incidence small angle scattering with polarized neutrons can probe the dependence of the magnetic lateral correlation length on the Fe thickness around the critical point. The obtained data, together with the SQUID measurements, would give access to the information on how the magnetization is developed at early stage of the layer growth.
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MARUYAMA Ryuji; BIGAULT Thierry; COURTOIS Pierre; CUBITT Robert; SAERBECK Thomas and SOYAMA Kazuhiko. (2019). Study of the in-plane magnetic structure of thin magnetic multilayers at phase boundary of percolation transition. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-54-261
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