RT Journal Article
T1 Helical surface magnetization in nanowires: the role of chirality
A1 Ruiz Gómez, Sandra
A1 Fernández González, Claudia
A1 Martínez, Eduardo
A1 Raposo, Víctor
A1 Sorrentino, Andrea
A1 Foerster, Michael
A1 Aballe, Lucía
A1 Mascaraque Susunaga, Arantzazu
A1 Ferrer, Salvador
A1 Pérez García, Lucas
AB Nanomagnetism 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 map the tridimensional spin textures associated. We present here a combination of dichroic X-ray transmission microscopy at different angles and micromagnetic simulations allowing to determine the magnetic configuration of cylindrical nanowires. We have applied it to permalloy nanowires with equispaced chemical barriers that can act as pinning sites for domain walls. The magnetization at the core is longitudinal and generates at the surface of the wire helical magnetization. Different types of domain walls are found at the pinning sites, which respond differently to applied fields depending on the relative chirality of the adjacent domains.
PB Royal Society of Chemistry
SN 2040-3364
YR 2020
FD 2020
LK https://hdl.handle.net/20.500.14352/6677
UL https://hdl.handle.net/20.500.14352/6677
LA eng
NO © 2020  Royal Society of Chemistry.This work is supported by the Spanish Ministry of Economy and Competitiveness (MINECO) through projects MAT2017-87072-C4-1-P, MAT2017-87072-C4-2-P and RTI2018-095303-B-C53, the Comunidad de Madrid through Project NANOMAGCOST-CM P2018/NMT-4321 and by Consejeria de Educacion of Castilla y Leon through project SA299P18. IMDEA Nanociencia acknowledges support from the Severo Ochoa Programme for Centres of Excellence in R&D (MINECO, Grant SEV-2016-0686). SRG acknowledges MINECO for FPI fellowship.
NO Ministerio de Economía y Competitividad (MINECO)
NO Comunidad de Madrid
NO Comunidad de Castilla y León
NO Centros de Excelencia Severo Ochoa (MINECO)
DS Docta Complutense
RD 30 sept 2024