Symmetry broken spin reorientation transition in epitaxial MgO/Fe/MgO layers with competing anisotropies

The observation of perpendicular magnetic anisotropy (PMA) at MgO/Fe interfaces boosted the development of spintronic devices based on ultrathin ferromagnetic layers. Yet, magnetization reversal in the standard magnetic tunnel junctions (MTJs) with competing PMA and in-plane anisotropies remains unc...

Descripción completa

Detalles Bibliográficos
Autores principales: Martínez, Isidoro, Tiusan, Coriolan, Hehn, Michel, Chshiev, Mairbek, Aliev, Farkhad G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6013435/
https://www.ncbi.nlm.nih.gov/pubmed/29930248
http://dx.doi.org/10.1038/s41598-018-27720-7
_version_ 1783334010060013568
author Martínez, Isidoro
Tiusan, Coriolan
Hehn, Michel
Chshiev, Mairbek
Aliev, Farkhad G.
author_facet Martínez, Isidoro
Tiusan, Coriolan
Hehn, Michel
Chshiev, Mairbek
Aliev, Farkhad G.
author_sort Martínez, Isidoro
collection PubMed
description The observation of perpendicular magnetic anisotropy (PMA) at MgO/Fe interfaces boosted the development of spintronic devices based on ultrathin ferromagnetic layers. Yet, magnetization reversal in the standard magnetic tunnel junctions (MTJs) with competing PMA and in-plane anisotropies remains unclear. Here we report on the field induced nonvolatile broken symmetry magnetization reorientation transition from the in-plane to the perpendicular (out of plane) state at temperatures below 50 K. The samples were 10 nm thick Fe in MgO/Fe(100)/MgO as stacking components of V/MgO/Fe/MgO/Fe/Co double barrier MTJs with an area of 20 × 20 μm(2). Micromagnetic simulations with PMA and different second order anisotropies at the opposite Fe/MgO interfaces qualitatively reproduce the observed broken symmetry spin reorientation transition. Our findings open the possibilities to develop multistate epitaxial spintronics based on competing magnetic anisotropies.
format Online
Article
Text
id pubmed-6013435
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-60134352018-06-27 Symmetry broken spin reorientation transition in epitaxial MgO/Fe/MgO layers with competing anisotropies Martínez, Isidoro Tiusan, Coriolan Hehn, Michel Chshiev, Mairbek Aliev, Farkhad G. Sci Rep Article The observation of perpendicular magnetic anisotropy (PMA) at MgO/Fe interfaces boosted the development of spintronic devices based on ultrathin ferromagnetic layers. Yet, magnetization reversal in the standard magnetic tunnel junctions (MTJs) with competing PMA and in-plane anisotropies remains unclear. Here we report on the field induced nonvolatile broken symmetry magnetization reorientation transition from the in-plane to the perpendicular (out of plane) state at temperatures below 50 K. The samples were 10 nm thick Fe in MgO/Fe(100)/MgO as stacking components of V/MgO/Fe/MgO/Fe/Co double barrier MTJs with an area of 20 × 20 μm(2). Micromagnetic simulations with PMA and different second order anisotropies at the opposite Fe/MgO interfaces qualitatively reproduce the observed broken symmetry spin reorientation transition. Our findings open the possibilities to develop multistate epitaxial spintronics based on competing magnetic anisotropies. Nature Publishing Group UK 2018-06-21 /pmc/articles/PMC6013435/ /pubmed/29930248 http://dx.doi.org/10.1038/s41598-018-27720-7 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Martínez, Isidoro
Tiusan, Coriolan
Hehn, Michel
Chshiev, Mairbek
Aliev, Farkhad G.
Symmetry broken spin reorientation transition in epitaxial MgO/Fe/MgO layers with competing anisotropies
title Symmetry broken spin reorientation transition in epitaxial MgO/Fe/MgO layers with competing anisotropies
title_full Symmetry broken spin reorientation transition in epitaxial MgO/Fe/MgO layers with competing anisotropies
title_fullStr Symmetry broken spin reorientation transition in epitaxial MgO/Fe/MgO layers with competing anisotropies
title_full_unstemmed Symmetry broken spin reorientation transition in epitaxial MgO/Fe/MgO layers with competing anisotropies
title_short Symmetry broken spin reorientation transition in epitaxial MgO/Fe/MgO layers with competing anisotropies
title_sort symmetry broken spin reorientation transition in epitaxial mgo/fe/mgo layers with competing anisotropies
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6013435/
https://www.ncbi.nlm.nih.gov/pubmed/29930248
http://dx.doi.org/10.1038/s41598-018-27720-7
work_keys_str_mv AT martinezisidoro symmetrybrokenspinreorientationtransitioninepitaxialmgofemgolayerswithcompetinganisotropies
AT tiusancoriolan symmetrybrokenspinreorientationtransitioninepitaxialmgofemgolayerswithcompetinganisotropies
AT hehnmichel symmetrybrokenspinreorientationtransitioninepitaxialmgofemgolayerswithcompetinganisotropies
AT chshievmairbek symmetrybrokenspinreorientationtransitioninepitaxialmgofemgolayerswithcompetinganisotropies
AT alievfarkhadg symmetrybrokenspinreorientationtransitioninepitaxialmgofemgolayerswithcompetinganisotropies

Ejemplares similares