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©2022 MDPI This research was funded by MCINN/AEI/10.13039/501100011033 under Grants PID2020117024GB-C43, RTI2018-097895-B-C43 and PRE2019-090268, and by the Comunidad de Madrid under Grant S2018-NMT-4321. Sandra Ruiz-Gomez and Claudia Fernandez-Gonzalez gratefully acknowledge the IEEE Magnetic Society Educational Seed Funding. Sandra Ruiz-Gomez also gratefully acknowledges the financial support of the Alexander von Humboldt Foundation., In the last few years, magnetic nanowires have gained attention due to their potential implementation as building blocks in spintronics applications and, in particular, in domain-wall- based devices. In these devices, the control of the magnetic properties is a must. Cylindrical magnetic nanowires can be synthesized rather easily by electrodeposition and the control of their magnetic properties can be achieved by modulating the composition of the nanowire along the axial direction. In this work, we report the possibility of introducing changes in the composition along the radial direction, increasing the degrees of freedom to harness the magnetization. In particular, we report the synthesis, using template-assisted deposition, of FeNi (or Co) magnetic nanowires, coated with a Au/Co (Au/FeNi) bilayer. The diameter of the nanowire as well as the thickness of both layers can be tuned at will. In addition to a detailed structural characterization, we report a preliminary study on the magnetic properties, establishing the role of each layer in the global collective behavior of the system., Ministerio de Ciencia e Innovación (MICINN) / FEDER, Ministerio de Ciencia e Innovación (MICINN) / AEI, Comunidad de Madrid, Depto. de Física de Materiales, Fac. de Ciencias Físicas, TRUE, pub

©2022 MDPI This research was funded by MCINN/AEI/10.13039/501100011033 under Grants PID2020117024GB-C43, RTI2018-097895-B-C43 and PRE2019-090268, and by the Comunidad de Madrid under Grant S2018-NMT-4321. Sandra Ruiz-Gomez and Claudia Fernandez-Gonzalez gratefully acknowledge the IEEE Magnetic Society Educational Seed Funding. Sandra Ruiz-Gomez also gratefully acknowledges the financial support of the Alexander von Humboldt Foundation., In the last few years, magnetic nanowires have gained attention due to their potential implementation as building blocks in spintronics applications and, in particular, in domain-wall- based devices. In these devices, the control of the magnetic properties is a must. Cylindrical magnetic nanowires can be synthesized rather easily by electrodeposition and the control of their magnetic properties can be achieved by modulating the composition of the nanowire along the axial direction. In this work, we report the possibility of introducing changes in the composition along the radial direction, increasing the degrees of freedom to harness the magnetization. In particular, we report the synthesis, using template-assisted deposition, of FeNi (or Co) magnetic nanowires, coated with a Au/Co (Au/FeNi) bilayer. The diameter of the nanowire as well as the thickness of both layers can be tuned at will. In addition to a detailed structural characterization, we report a preliminary study on the magnetic properties, establishing the role of each layer in the global collective behavior of the system., Ministerio de Ciencia e Innovación (MICINN) / FEDER, Ministerio de Ciencia e Innovación (MICINN) / AEI, Comunidad de Madrid, Depto. de Física de Materiales, Fac. de Ciencias Físicas, TRUE, pub

© 2021 by the authors.Licensee MDPI This research was partially funded by the Spanish Agencia Estatal de Investigacion through projects MAT2017-87072-C4-2-P and RTI2018-095303-B-C53, by The Ministerio de Ciencia y Universidades through project RTI2018-095303-A-C52, through the Ramon y Cajal Contract RYC2017-23320, The European Commission through the H2020 Project No. 720853 (AMPHIBIAN) and by the Comunidad de Madrid through Project NANOMAGCOST-CM P2018/NMT-4321., The use of metallic nanowires is mostly reduced to scientific areas where a small quantity of nanostructures are needed. In order to broaden the applicability of these nanomaterials, it is necessary to establish novel synthesis protocols that provide a larger amount of nanowires than the conventional laboratory fabrication processes at a more competitive cost. In this work, we propose several modifications to the conventional electrochemical synthesis of nanowires in order to increase the production with considerably reduced production time and cost. To that end, we use a soft anodization procedure of recycled aluminum at room temperature to produce the alumina templates, followed by galvanostatic growth of CoFe nanowires. We studied their morphology, composition and magnetic configuration, and found that their properties are very similar to those obtained by conventional methods., Unión Europea. Horizonte 2020, Ministerio de Economía y Competividad (MINECO) /FEDER, Ministerio de Ciencia e Innovación (MICINN) /FEDER, Comunidad de Madrid, Programa Ramón y Cajal, Depto. de Física de Materiales, Fac. de Ciencias Físicas, TRUE, pub

© 2021The Author(s). Artículo firmado por más de diez autores. We thank V. P. Amin, S. Sangiao, A. Fert, and F. Casanova for valuable discussions. This research was supported by the Regional Government of Madrid through Project No. P2018/NMT-4321 (NANOMAGCOST-CM) and the Spanish Ministry of Economy and Competitiveness (MINECO) through Project Nos. RTI2018-097895-B-C42, RTI2018-097895-B-C43 (FUN-SOC), PGC2018-098613-B-C21 (SpOrQuMat), PGC2018-098265-B-C31, and PCI2019-111867-2 (FLAG ERA 3 grant SOgraphMEM). J.M.D.T. and A.G. acknowledge support from MINECO and CM through Grant Nos. BES-2017-080617 and PEJD-2017-PREIND-4690, respectively. I.A. acknowledges financial support from the Regional Government of Madrid through Contract No. PEJD-2019-POST/IND-15343. IMDEA Nanoscience is supported by the "Severo Ochoa" Program for Centres of Excellence in R&D, MINECO (Grant No. SEV-2016-0686). A.A., S.P.-W., and J.-C.R.-S. acknowledge support from Toptronic ANR through Project No. ANR-19-CE24-0016-01. P.J.-C., I.L., L.M., P.A.A., and M.R.I. acknowledge support from Project No. MAT2017-82970-C2-R. Electron microscopy observations were carried out at the Centro Nacional de Microscopia Electronica at the Universidad Complutense de Madrid., Spin Hall and Rashba-Edelstein effects, which are spin-to-charge conversion phenomena due to spin-orbit coupling (SOC), are attracting increasing interest as pathways to manage rapidly and at low consumption cost the storage and processing of a large amount of data in spintronic devices as well as more efficient energy harvesting by spin-caloritronics devices. Materials with large SOC, such as heavy metals (HMs), are traditionally employed to get large spin-to-charge conversion. More recently, the use of graphene (gr) in proximity with large SOC layers has been proposed as an efficient and tunable spin transport channel. Here, we explore the role of a graphene monolayer between Co and a HM and its interfacial spin transport properties by means of thermo-spin measurements. The gr/HM (Pt and Ta) stacks have been prepared on epitaxial Ir(111)/Co(111) structures grown on sapphire crystals, in which the spin detector (i.e., top HM) and the spin injector (i.e., Co) are all grown in situ under controlled conditions and present clean and sharp interfaces. We find that a gr monolayer retains the spin current injected into the HM from the bottom Co layer. This has been observed by detecting a net reduction in the sum of the spin Seebeck and interfacial contributions due to the presence of gr and independent from the spin Hall angle sign of the HM used., Ministerio de Economía y Competitividad (MINECO), Ministerio de Ciencia e Innovación (MICINN), Agence Nationale de la Recherche (ANR), Comunidad de Madrid, Centros de Excelencia Severo Ochoa (MINECO), Depto. de Física de Materiales, Fac. de Ciencias Físicas, TRUE, pub

© 2021 by the authors.Licensee MDPI This research was partially funded by the Spanish Agencia Estatal de Investigacion through projects MAT2017-87072-C4-2-P and RTI2018-095303-B-C53, by The Ministerio de Ciencia y Universidades through project RTI2018-095303-A-C52, through the Ramon y Cajal Contract RYC2017-23320, The European Commission through the H2020 Project No. 720853 (AMPHIBIAN) and by the Comunidad de Madrid through Project NANOMAGCOST-CM P2018/NMT-4321., The use of metallic nanowires is mostly reduced to scientific areas where a small quantity of nanostructures are needed. In order to broaden the applicability of these nanomaterials, it is necessary to establish novel synthesis protocols that provide a larger amount of nanowires than the conventional laboratory fabrication processes at a more competitive cost. In this work, we propose several modifications to the conventional electrochemical synthesis of nanowires in order to increase the production with considerably reduced production time and cost. To that end, we use a soft anodization procedure of recycled aluminum at room temperature to produce the alumina templates, followed by galvanostatic growth of CoFe nanowires. We studied their morphology, composition and magnetic configuration, and found that their properties are very similar to those obtained by conventional methods., Unión Europea. Horizonte 2020, Ministerio de Economía y Competividad (MINECO) /FEDER, Ministerio de Ciencia e Innovación (MICINN) /FEDER, Comunidad de Madrid, Programa Ramón y Cajal, Depto. de Física de Materiales, Fac. de Ciencias Físicas, TRUE, pub