Showing papers by "Michel Viret published in 2000"
TL;DR: The resistive effect of domain walls in FePd films with perpendicular anisotropy was studied experimentally as a function of field and temperature and values are consistent with the predictions of Levy and Zhang.
Abstract: The resistive effect of domain walls in FePd films with perpendicular anisotropy was studied experimentally as a function of field and temperature. The films were grown directly on MgO substrates, which induces an unusual virgin magnetic configuration composed of 60 nm wide parallel stripe domains. This allowed us to carry out the first measurements of the anisotropy of domain wall resistivity in the two configurations of current perpendicular and parallel to the walls. At 18 K, we find $8.2%$ and $1.3%$ for the domain wall magnetoresistance normalized to the wall width (8 nm) in these two respective configurations. These values are consistent with the predictions of Levy and Zhang.
57 citations
TL;DR: A tunnel junction based on the half-metallic oxide CrO2 using a native oxide barrier layer and a cobalt top electrode is described in this article, where the I :V characteristic is fitted to the Simmons model with = 0.76 eV and t = 2.0 nm.
Abstract: A tunnel junction based on the half-metallic oxide CrO2 uses a native oxide barrier layer and a cobalt top electrode. The I :V characteristic is fitted to the Simmons model with = 0.76 eV and t = 2.0 nm. The magnetoresistance is positive with R /R = 1.0% at 77 K.
32 citations
TL;DR: In this paper, the interface magnetism of La 0.7/0.3 MnO 3 epitaxial thin films deposited on MgO and SrTiO 3 single crystal substrates by polarised neutron reflectometry was studied.
23 citations