Výsledky vyhledávání - "J. M. Alameda"

Akademický článek

Revealing 3D magnetization of thin films with soft X-ray tomography: magnetic singularities and topological charges

Autor: A. Hierro-Rodriguez, C. Quirós, A. Sorrentino, L. M. Alvarez-Prado, J. I. Martín, J. M. Alameda, S. McVitie, E. Pereiro, M. Vélez, S. Ferrer

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)

Although magnetic tomography has been used in the past to determine the 3D magnetization of materials its application to thin films remains challenging. Here the authors reconstruct the magnetization of a thin film, enabling the measurement of topolo

Externí odkaz: https://doaj.org/article/427781c2493e40c0b6419f16d455380f

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Akademický článek

Layer-dependence of macroscopic and atomic magnetic correlations in Co/Pd multilayers

Autor: N. Soriano, B. Mora, V. Rollano, P. Gargiani, C. Quirós, F. Gálvez, C. Redondo, J. del Valle, I. Montoya, A. Gómez, E. M. González, E. Navarro, M. Vélez, J. M. Alameda, M. Valvidares, J. L. Vicent, R. Morales

Publikováno v: AIP Advances, Vol 10, Iss 6, Pp 065321-065321-6 (2020)

The development of multilayered materials with engineered magnetic properties compels a deep knowledge of physical properties at the atomic scale. The magnetic anisotropy is a key property in these materials. This work accounts for the magnetic aniso

Externí odkaz: https://doaj.org/article/5f0e6a0ca2cb4c6fa757029a17296386

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Akademický článek

Magnetic stripes and holes: Complex domain patterns in perforated films with weak perpendicular anisotropy

Autor: F. Valdés-Bango, M. Vélez, L. M. Alvarez-Prado, J. M. Alameda, J. I. Martín

Publikováno v: AIP Advances, Vol 7, Iss 5, Pp 056303-056303-4 (2017)

Hexagonal antidot arrays have been patterned on weak perpendicular magnetic anisotropy NdCo films by e-beam lithography and lift off. Domain structure has been characterized by Magnetic Force Microscopy at remanence. On a local length scale, of the o

Externí odkaz: https://doaj.org/article/413108b635d242e796a9ecdb57f11b79

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Tailoring block copolymer nanoporous thin films with acetic acid as a small guest molecule

Autor: José Ignacio Martín, Giuseppe Portale, Fernando Valdes‐Vango, Daniel Hermida-Merino, Francisco J. García Alonso, María Vélez, J. M. Alameda, Carlos Quirós, Alberto Alvarez-Fernandez

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
instname
Polymer International, 68(11), 1914-1920. Wiley

Block copolymers offer the fabrication of mesoporous thin films with distinct nanoscale structural features. In this contribution, we present the use of acetic acid (CH3COOH) as a low‐molecular‐weight guest molecule to tune the supramolecular ass

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d509018bad7cb2cc75e71fba4d89c9e2
https://research.rug.nl/en/publications/9ee2f84d-3d9a-45f0-b2d2-dc9c0420fc3b

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Revealing 3D magnetization of thin films with soft X-ray tomography: magnetic singularities and topological charges

Autor: Carlos Quirós, Aurelio Hierro-Rodriguez, Stephen McVitie, J. M. Alameda, Andrea Sorrentino, S. Ferrer, María Vélez, Eva Pereiro, L. M. Álvarez-Prado, José Ignacio Martín

Publikováno v: Scopus
RUO: Repositorio Institucional de la Universidad de Oviedo
Universidad de Oviedo (UNIOVI)
Nature Communications
Digital.CSIC. Repositorio Institucional del CSIC
instname
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
RUO. Repositorio Institucional de la Universidad de Oviedo

The knowledge of how magnetization looks inside a ferromagnet is often hindered by the limitations of the available experimental methods which are sensitive only to the surface regions or limited in spatial resolution. Here we report a vector tomogra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0dd90b722755a32e2281fb877d6ec553
http://hdl.handle.net/10651/58673

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Determination of the out-of-plane anisotropy contributions (first and second anisotropy terms) in amorphous Nd-Co thin films by micromagnetic numerical simulations

Autor: María Vélez, Rosalía Cid, J. Diaz, Aurelio Hierro-Rodriguez, L. M. Álvarez-Prado, J. M. Alameda, R. Morales, H. Rubio

Publikováno v: Journal of Magnetism and Magnetic Materials. 456:251-256

Amorphous Nd-Co thin films exhibit stripe shaped periodic magnetic domains with local out-of-plane magnetization components due to their perpendicular magnetic anisotropy. This anisotropy has been quantified in a fairly simple way by reproducing the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::115e305a48049f654aeac964ae0fb035
https://doi.org/10.1016/j.jmmm.2018.01.086

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Polymer porous thin films obtained by direct spin coating

Autor: Alberto Alvarez-Fernandez, Raquel Losada-Ambrinos, F. Valdés-Bango, María Vélez, José Ignacio Martín, Francisco J. García Alonso, J. M. Alameda

Publikováno v: Polymer International. 67:393-398

This work was supported by Spanish MINECO (FIS2013-45469 and FIS2016-76058 (AEI/FEDER,EU)).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::52290b13196067e3d7fb24cc47fbda70
https://doi.org/10.1002/pi.5519

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2D magnetic domain wall ratchet: the limit of submicrometric holes

Autor: L.M. García, Javier Sesé, Aurelio Hierro-Rodriguez, Julia Herrero-Albillos, F. Valdés-Bango, Juan Bartolomé, L.M. Alvarez Prado, Florian Kronast, J. M. Alameda, Fernando Bartolomé, María Vélez, José Ignacio Martín, C. Castán-Guerrero

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
instname
Materials & Design, Vol 138, Iss, Pp 111-118 (2018)
Scopus
Zaguán. Repositorio Digital de la Universidad de Zaragoza
RUO. Repositorio Institucional de la Universidad de Oviedo

Póster presentado a la 64th Annual Conference on Magnetism and Magnetic Materials (MMM), celebrada en Las Vegas (USA) del 4 al 8 de noviembre de 2019.
In the last decade, magnetic ratchet effect of domain walls has been proposed by several grou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29e7d2c5188cb0d8cf90ae8949926f48
http://hdl.handle.net/10261/202704

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Tunable ferromagnetic resonance in coupled trilayers with crossed in-plane and perpendicular magnetic anisotropies

Autor: F. Valdés-Bango, Carlos Quirós, L. M. Álvarez-Prado, María Vélez, Aurelio Hierro-Rodriguez, J. M. Alameda, David S. Schmool, José Ignacio Martín, Daniel Markó

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
instname
Scopus
RUO. Repositorio Institucional de la Universidad de Oviedo

An original approach to tune the ferromagnetic resonance frequency of a soft magnetic Ni80Fe20 (Permalloy = Py) film with in-plane magnetic anisotropy (IMA) based on the controlled coupling to a hard magnetic NdCox film with perpendicular magnetic an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f03f2ea48f70f61bf46d48a050d0b61
http://hdl.handle.net/10261/201877

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Akademický článek

Double percolation effects and fractal behavior in magnetic/superconducting hybrids

Autor: L Ruiz-Valdepeñas, M Vélez, F Valdés-Bango, L M Álvarez-Prado, J I Martín, E Navarro, J M Alameda, J L Vicent

Publikováno v: New Journal of Physics, Vol 15, Iss 10, p 103025 (2013)

Perpendicular magnetic anisotropy ferromagnetic/superconducting (FM/SC) bilayers with a labyrinth domain structure are used to study nucleation of superconductivity on a fractal network, tunable through magnetic history. As clusters of reversed domai

Externí odkaz: https://doaj.org/article/40b281d0764d4dacb015751a99f84e4e

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