Exchange bias: The antiferromagnetic bulk matters
نویسندگان
چکیده
Ali C. Basaran, T. Saerbeck, J. de la Venta, H. Huckfeldt, A. Ehresmann, and Ivan K. Schuller Department of Physics and Center for Advanced Nanoscience, University of California San Diego, La Jolla, California 92093, USA Materials Science and Engineering, University of California San Diego, La Jolla, California 92093, USA Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
منابع مشابه
Electric control of exchange bias training.
Voltage-controlled exchange bias training and tunability are introduced. Isothermal voltage pulses are used to reverse the antiferromagnetic order parameter of magnetoelectric Cr(2)O(3), and thus continuously tune the exchange bias of an adjacent CoPd film. Voltage-controlled exchange bias training is initialized by tuning the antiferromagnetic interface into a nonequilibrium state incommensura...
متن کاملSpin-flop coupling and rearrangement of bulk antiferromagnetic spins in epitaxial exchange-biased Fe/MnPd/Fe/IrMn multilayers
The role of bulk antiferromagnetic spins on exchange bias was investigated in interface spin-flop coupled Fe/MnPd bilayers and Fe/MnPd/Fe/IrMn multilayers. Magnetic measurement of the bilayers showed that the exchange bias saturated at a uniquely large critical thickness, ∼300 Å, with a spin reorientation transition simultaneously observed. Field cooling of the multilayer, with parallel or anti...
متن کاملObservation of an atomic exchange bias effect in DyCo4 film
The fundamental important and technologically widely employed exchange bias effect occurs in general in bilayers of magnetic thin films consisting of antiferromagnetic and ferromagnetic layers where the hard magnetization behavior of an antiferromagnetic thin film causes a shift in the magnetization curve of a soft ferromagnetic film. The minimization of the single magnetic grain size to increa...
متن کاملRole of the antiferromagnetic bulk spin structure on exchange bias.
The cooling field dependence of the exchange bias field in ferromagnet/antiferromagnet (FM/AF) multilayers demonstrates that the bulk AF spin structure plays a crucial role on the origin of exchange bias. FM/AF/FM trilayers were designed to eliminate any interlayer exchange coupling between the FM slabs. By choosing the magnetic cooling field, the AF is ordered below its Néel temperature with t...
متن کاملPinned magnetic moments in exchange bias: Role of the antiferromagnetic bulk spin structure
Magneto-optical Kerr effect measurements of epitaxial AFM/FM bilayers and FM/AFM/FM trilayers on Cu3Au(001), where “AFM” stands for a Ni25Mn75 antiferromagnetic layer, and “FM” for ferromagnetic layers that are either Ni or Ni/Co with out-of-plane or in-plane easy axis of magnetization, show that trilayers with collinear magnetization directions of both FM layers exhibit always a much lower exc...
متن کامل