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

Abstract 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 re...

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Autores principales:	Isidoro Martínez, Coriolan Tiusan, Michel Hehn, Mairbek Chshiev, Farkhad G. Aliev
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/51b9e2e496f542d695c1db141b0d3b89
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spelling	oai:doaj.org-article:51b9e2e496f542d695c1db141b0d3b892021-12-02T11:40:24ZSymmetry broken spin reorientation transition in epitaxial MgO/Fe/MgO layers with competing anisotropies10.1038/s41598-018-27720-72045-2322https://doaj.org/article/51b9e2e496f542d695c1db141b0d3b892018-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-27720-7https://doaj.org/toc/2045-2322Abstract 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 μm2. 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.Isidoro MartínezCoriolan TiusanMichel HehnMairbek ChshievFarkhad G. AlievNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Isidoro Martínez Coriolan Tiusan Michel Hehn Mairbek Chshiev Farkhad G. Aliev Symmetry broken spin reorientation transition in epitaxial MgO/Fe/MgO layers with competing anisotropies
description	Abstract 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 μm2. 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	article
author	Isidoro Martínez Coriolan Tiusan Michel Hehn Mairbek Chshiev Farkhad G. Aliev
author_facet	Isidoro Martínez Coriolan Tiusan Michel Hehn Mairbek Chshiev Farkhad G. Aliev
author_sort	Isidoro Martínez
title	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_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_sort	symmetry broken spin reorientation transition in epitaxial mgo/fe/mgo layers with competing anisotropies
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/51b9e2e496f542d695c1db141b0d3b89
work_keys_str_mv	AT isidoromartinez symmetrybrokenspinreorientationtransitioninepitaxialmgofemgolayerswithcompetinganisotropies AT coriolantiusan symmetrybrokenspinreorientationtransitioninepitaxialmgofemgolayerswithcompetinganisotropies AT michelhehn symmetrybrokenspinreorientationtransitioninepitaxialmgofemgolayerswithcompetinganisotropies AT mairbekchshiev symmetrybrokenspinreorientationtransitioninepitaxialmgofemgolayerswithcompetinganisotropies AT farkhadgaliev symmetrybrokenspinreorientationtransitioninepitaxialmgofemgolayerswithcompetinganisotropies
_version_	1718395641769492480

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

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