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Carmona Tejero, Noemi ; Bouzas, V. ; Jiménez, F. ; Plaza, M. ; Pérez García, Lucas ; García, M. A. ; Villegas, M. A. ; LLopis, J. | Elsevier Science S A | 2010-03-04Optical absorption and magnetic properties of silica sol-gel monoliths doped with cobalt starting from different precursors and water/1-propanol molar ratios are investigated. Structural characterization of the sol-gel by X-ray absorption near-e[...]texto impreso
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Iglesias Freire, O. ; Jaafar, M. ; Pérez García, Lucas ; Abril, Abril, de ; Vázquez, M. ; Asenjo, A. | Elsevier Science BV | 2014-04The proximity effect in the collective behavior of arrays of magnetic nanostripes is currently a subject of intensive research. The imperative of reducing the size and distances between elements in order to achieve higher storage capacity, faste[...]texto impreso
Khaderbad, M. A. ; Dhar, S. ; Pérez García, Lucas ; Ploog, K. H. ; Melnikov, A. ; Wieck, A. D. | American Institute of Physics | 2007-08-13The authors have studied the effect of annealing on the magnetic and the structural properties of Gd focused ion beam implanted GaN samples. Molecular beam epitaxy grown GaN layers, which were implanted with 300 keV Gd^(3+) ions at room tempera[...]texto impreso
Pérez García, Lucas ; de Abril, O. ; Sánchez Tujillo, M. C. ; Aroca, C. ; López, E. ; Sánchez, P. | Elsevier Science BV | 2000-06Multilayer films composed of Co_(x)P_(1-x) ferromagnetic layers with different composition (0.74texto impreso
Prieto, Pilar ; Marco, F. ; Prieto, José E. ; Ruiz Gómez, Sandra ; Pérez García, Lucas ; Perez del Real, Rafael ; Velazquez, Manuel ; De laFiguera, Juan | Elsevier Science B. V. | 2018-04-01Epitaxial cobalt ferrite thin films with strong in-plane magnetic anisotropy have been grown on Si (001) substrates using a TiN buffer layer. The epitaxial films have been grown by ion beam sputtering using either metallic, CoFe?, or ceramic, Co[...]texto impreso
López Sánchez, Jesús ; McIntosh, G. ; Osete López, María Luisa ; Campo García, A. del ; Villalain, J.J. ; Pérez García, Lucas ; Kovacheva, M. ; Rodríguez de la Fuente, Óscar | Amer Geophysical Union | 2017-07The identification of epsilon iron oxide (-Fe2O3) as the low Curie temperature high coercivity stable phase (HCSLT) carrying the remanence in heated archeological samples has been achieved in samples from two archeological sites that exhibited t[...]texto impreso
Dhar, S. ; Kammermeier, T. ; Ney, A. ; Pérez García, Lucas ; Ploog, K. H. ; Melnikov, A. ; Wieck, A. D. | American Institute of Physics | 2006-08-07The structural and the magnetic properties of Gd-focused ion-beam-implanted GaN layers are studied. Gd^(3+) ions were uniformly implanted in molecular beam epitaxy rown GaN layers at room temperature with an energy of 300 keV at doses ranging f[...]texto impreso
Ruiz Gómez, Sandra ; Serrano, A. ; Carabias,, I. ; Garc?a, M. A. ; Hernando Grande, Antonio ; Mascaraque Susunaga, Arantzazu ; Pérez García, Lucas ; González Barrio, Miguel Ángel ; Rodríguez de la Fuente, Óscar | American Institute of Physics | 2017-02-27We have used a low-energy ion bombardment to fabricate an epitaxial single-crystalline magnetite/hematite bilayer grown on Au(111). This non-conventional fabrication method involves the transformation of the upper layers of a single-crystalline [...]texto impreso
Dhar, S. ; Pérez García, Lucas ; Brandt, O. ; Trampert, A. ; Ploog, K. H. ; Keller, J. ; Beschoten, B. | American Physical Society | 2005-12We present a systematic study of growth, structural, and magnetic characterization of GaN:Gd layers grown directly on 6H-SiC(0001) substrates by reactive molecular-beam epitaxy with a Gd concentration ranging from 7x10^(15) to 2x1019 cm^(?3). Th[...]texto impreso
Ruiz Gómez, Sandra ; Pérez García, Lucas ; Mascaraque Susunaga, Arantzazu ; Quesada, Adrian ; Prieto, Pilar ; Palacio, Irene ; Martín García, Laura ; Foerster, Michael ; Aballe, Lucía ; Figuera, Juan de la | Royal Society of Chemistry | 2018-03-28We have grown high quality magnetite microcrystals free from antiphase boundaries on Ru(0001) by reactive molecular beam epitaxy, conserving bulk magnetic properties below 20 nm thickness. Magnetization vector maps are obtained by X-ray spectrom[...]texto impreso
Ruiz Gómez, Sandra ; Boscá, Alberto ; Pérez García, Lucas ; Pedrós, Jorge ; Martínez, Javier ; Páez, Antonio ; Calle de la Rosa, Lucia de la ; Calle, Fernando | Elsevier Science SA | 2015-08The need of new systems for the storage and conversion of renewable energy sources is fueling the research in supercapacitors. In this work, we propose a low temperature route for the synthesis of electrodes for these supercapacitors: electrodep[...]texto impreso
Ruiz Gómez, Sandra ; Fernández González, Claudia ; Martínez, Eduardo ; Raposo, Víctor ; Sorrentino, Andrea ; Foerster, Michael ; Aballe, Lucía ; Mascaraque Susunaga, Arantzazu ; Ferrer, Salvador ; Pérez García, Lucas | Royal Society of Chemistry | 2020Nanomagnetism is nowadays expanding into three dimensions, triggered by the discovery of new magnetic phenomena and their potential use in applications. This shift towards 3D structures should be accompanied by strategies and methodologies to ma[...]texto impreso
Ruiz Gómez, Sandra ; González Barrio, Miguel Ángel ; Mascaraque Susunaga, Arantzazu ; Pérez García, Lucas ; Serrano, Aída ; Guerrero, Rubén ; Muñoz, Manuel ; Lucas, Irene ; Foerster, Michael ; Aballe, Lucía | American Institute of Physics | 2018-10-22The spin Hall effect (SHE) provides an efficient tool for the production of pure spin currents, essentially for the next generation of spintronics devices. Giant SHE has been reported in Cu doped with 0.5% Bi grown by sputtering, and larger valu[...]texto impreso
Martín García, Laura ; Quesadab, Adrian ; Pérez García, Lucas ; Foerster, Michael ; Aballe, Lucía ; Figuera, Juan de la | Elsevier | 2016Mixed iron-cobalt oxides have been grown on a Ru(0001) single crystal substrate by reactive molecular beam epitaxy. The growth has been followed by low-energy electron microscopy and diffraction. Chemical characterization has been performed by s[...]
