The influence of interfacial roughness on the coherence of structure and magnetic coupling across barriers in Fe/MgO multilayers.
Journal of physics. Condensed matter : an Institute of Physics journal 22:22 (2010) 226004
Abstract:
Single-crystal Fe/MgO multilayers are model systems in which to study magnetic tunnel junctions. We find that the interfacial roughness leads to the loss of coherence of the crystal structure. For thick MgO layers ferromagnetic (FM) ordering is found using polarized neutron reflectivity (PNR). For thin MgO layers magnetization measurements reveal the presence of antiferromagnetic (AF) interactions, but no long-range AF order is found using PNR. After cycling in a hysteresis loop, FM correlations are found at the coercive point, and this will limit the maximum tunnelling magnetoresistance.Chemical and magnetic structure of uranium/gadolinium multilayers studied by transmission electron microscopy, neutron scattering, and x-ray reflectivity
Physical Review B American Physical Society (APS) 81:13 (2010) 134434
Designed synthesis of materials for high-sensitivity geomagnetic sensors
Applied Physics Letters AIP Publishing 96:5 (2010)
Abstract:
Spin-dependent tunneling spectroscopy for interface characterization of epitaxial Fe/MgO/Fe magnetic tunnel junctions
Physical Review B American Physical Society (APS) 81:6 (2010) 064438
Exchange bias in epitaxial Fe/Ir0.2Mn0.8 bilayers grown on MgO (0 0 1)
Journal of Physics D IOP Publishing 42:22 (2009) 225001