Enhanced magnetism in field-cooled [Ni80Fe20/Mn]3 multilayers studied using polarized neutron reflectometry

Authors

W Uilhoorn, University of New South Wales
S J. Callori, University of New South Wales
David L. Cortie, University of WollongongFollow
Hui-Chia Su, National Synchrotron Radiation Research Centre
Y Khaydukov, Max Planck Institute
Ko-Wei Lin, National Chung Hsing University, TaiwanFollow
Frank Klose, ANSTO, Australian Nuclear Science And Technology OrganisationFollow

RIS ID

107426

Publication Details

Uilhoorn, W., Callori, S. J., Cortie, D. L., Su, H., Khaydukov, Y., Lin, K. & Klose, F. (2016). Enhanced magnetism in field-cooled [Ni80Fe20/Mn]3 multilayers studied using polarized neutron reflectometry. Journal of Physics: Conference Series, 711 012005-1-012005-6.

Abstract

Here, the interfacial magnetic coupling in an exchange biased [Ni80Fe20/Mn]3 multilayer system has been studied using polarized neutron re ectometry. Previous results on this system indicate the importance of the coupling between the Fe-Mn and Ni-Mn orbitals at the layer interfaces. Magnetic depth profiles of the multilayer were measured at low temperatures under field-cooled and zero-field-cooled conditions. While no definitive interfacial state was found, a magnetic moment enhancement of roughly 20-30% in the applied field direction was observed throughout the bulk of the NiFe layers in the field-cooled state as compared to the zero-field-cooled measurements. The origin of this enhancement also likely stems from Fe-Mn and Ni-Mn orbital coupling, but due to the interfacial roughnesses of the sample, the areas where this coupling plays an important role is no longer confined to the interface.