We use a phase-sensitive, quantitative technique to separate inductive and ac inverse spin Hall effect (ISHE) voltages observed in Ni(81)Fe(19)/normal metal multilayers under the condition of ferromagnetic resonance. For Ni(81)Fe(19)/Pt thin film bilayers and at microwave frequencies from 7 to 20 GHz, we observe an ac ISHE magnitude that is much larger than that expected from the dc spin Hall a...

Although metallic multilayers have recently attracted much attention, especially since the discovery of giant magnetoresistance in Fe /Cr multilayers [1], only a small number of true superlattice effects have been experimentally observed. These are the appearance of superlattice Bragg peaks in X-ray diffraction [2], the collective behavior of magnons in magnetic/non-magnetic superlattices [3], ...

All materials exhibit magnetoresistance ~MR!, that is, a change in resistance when a magnetic field is applied. This property is stronger in magnetic than in nonmagnetic materials. Magnetoresistance is a phenomenon of great interest due to its technological applications. Among the different types of MR observed in magnetic materials, the following three should be remarked: anisotropic magnetore...

In this study, CoCu alloy nanoparticles-incorporated carbon nanofibers are introduced as effective non precious electrocatalyst for methanol oxidation in alkaline medium. The introduced electrocatalyst has been synthesized by simple and effective process; electrospinning. Typically, calcination, in nitrogen atmosphere, of electrospun nanofibers composed of cobalt acetate, copper acetate and pol...

First-principles calculations have been performed in order to determine effective exchange integrals between strongly and weakly exchange-coupled Co monolayers in certain modulated periodic CoCu 2 /CoCu n-type superlattices with three non-equivalent Co planes, which have not yet been studied hitherto. For 3 ≤ n ≤ 6 we find that the two non-equivalent exchange integrals have opposite signs, i.e....

A part of the Ph.D. project focused on growth and characterization of metal multilayers is presented in this licentiate thesis. The main interest in carrying out this research is to develop highly reflective normal-incidence condenser mirrors for soft X-ray microscopy studies in the water window (λ = 2.4− 4.2 nm) wavelength regime. Transition metals like Sc, Ti V, etc. have been considered beca...