Journal of Magnetism and Magnetic Materials vol:282 pages:6-10
Polarized neutron reflectometry with neutron spin analysis is used to investigate the magnetic properties of large arrays of ferromagnetic rectangular Co bars with in-plane magnetization, as well as exchange-biased Co/CoO islands. The off-specular neutron scattering signal contains satellite peaks due to the lateral periodicity of the dot array. Using polarized neutrons, the intensity of the satellite peaks is measured as a function of an external magnetic field applied in the sample plane. Spin analysis of the scattered neutrons reveals the magnetization reversal and saturation within the bars. (C) 2004 Elsevier B.V. All rights reserved.