Magnetization flop in Fe/Cr GMR multilayers

Autor: Stefan Mattauch, Ulrich Rücker, Denis Korolkov, Artur Glavic, Th. Brückel, Elisabeth Josten
Rok vydání: 2010
Předmět:
Zdroj: Journal of physics / Conference Series 211, 012023 (2010). doi:10.1088/1742-6596/211/1/012023
ISSN: 1742-6596
Popis: We study the magnetization of antiferromagnetically (AF) coupled Fe/Cr multilayers, with 7 and 19 periods respectively, under the influence of an external magnetic field. Due to the odd number of Fe layers the uncompensated magnetization of the multilayer at remanence is equal to the magnetization of a single Fe layer. Measurements have been performed using the magnetooptical Kerr effect (MOKE) for an integral overview and polarized neutron scattering under grazing incidence for a depth resolved information about the magnetization orientation of the individual Fe layers. We find a dependence of the orientation of the remanent magnetization on the number of AF coupled Fe double layers. For a small number of periods (here: 7). The uncompensated magnetic moment is sufficient to align the magnetization of all layers parallel or antiparallel to the applied magnetic field. On the other hand, in the multilayer with 19 AF-coupled Fe layers all Fe layers are magnetized perpendicular to the field.
Databáze: OpenAIRE