A. Hierro-Rodriguez

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Advances in nanoscale magnetism increasingly require characterization tools providing detailed descriptions of magnetic configurations. Magnetic transmission X-ray microscopy produces element specific magnetic domain images with nanometric lateral resolution in films up to ∼100 nm thick. Here we present an imaging method using the angular dependence of(More)
Stripe domains are studied in perpendicular magnetic anisotropy films nanostructured with a periodic thickness modulation that induces the lateral modulation of both stripe periods and in-plane magnetization. The resulting system is the 2D equivalent of a strained superlattice with properties controlled by interfacial misfit strain within the magnetic(More)
Hybrid 2D hard-soft composites have been fabricated by combining soft (Co73Si27) and hard (NdCo5) magnetic materials with in-plane and out-of-plane magnetic anisotropies, respectively. They have been microstructured in a square lattice of CoSi anti-dots with NdCo dots within the holes. The magnetic properties of the dots allow us to introduce a(More)
A palladium (Pd)-based optical metamaterial has been designed, fabricated and characterized for its application in hydrogen sensing. The metamaterial can replace Pd thin films in optical transmission schemes for sensing with performances far superior to those of conventional sensors. This artificial material consists of a palladium-alumina metamaterial(More)
A. Alija,1 D. Pérez de Lara,2,3 E. M. Gonzalez,3 G. N. Kakazei,4,5 J. B. Sousa,4 J. P. Araujo,4 A. Hierro-Rodriguez,1 J. I. Martín,1 J. M. Alameda,1 M. Vélez,1,* and J. L. Vicent2,3 1Depto. Física, Universidad de Oviedo-CINN, 33007 Oviedo, Spain 2IMDEA-Nanociencia, Cantoblanco, 28049 Madrid, Spain 3Depto. Física de Materiales, Universidad Complutense de(More)
Magnetization reversal processes have been analyzed by Magnetic Force Microscopy in dense arrays of Co bars with well defined shape anisotropy and strong magnetostatic interactions. Two different geometries have been used: rectangular and rhombic so that the sign of dipolar interactions between adjacent chains of bars is changed from antiferromagnetic(More)
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