Enhancement of perpendicular magnetic anisotropy and its electric field-induced change through interface engineering in Cr/Fe/MgO

Recently, perpendicular magnetic anisotropy (PMA) and its voltage control (VC) was demonstrated for Cr/Fe/MgO. In this study, we shed light on the origin of large voltage-induced anisotropy change in Cr/Fe/MgO. Analysis of the chemical structure of Cr/Fe/MgO revealed the existence of Cr atoms in the...

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Autores principales: Kozioł-Rachwał, A., Nozaki, T., Freindl, K., Korecki, J., Yuasa, S., Suzuki, Y.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5519679/
https://www.ncbi.nlm.nih.gov/pubmed/28729553
http://dx.doi.org/10.1038/s41598-017-05994-7
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author Kozioł-Rachwał, A.
Nozaki, T.
Freindl, K.
Korecki, J.
Yuasa, S.
Suzuki, Y.
author_facet Kozioł-Rachwał, A.
Nozaki, T.
Freindl, K.
Korecki, J.
Yuasa, S.
Suzuki, Y.
author_sort Kozioł-Rachwał, A.
collection PubMed
description Recently, perpendicular magnetic anisotropy (PMA) and its voltage control (VC) was demonstrated for Cr/Fe/MgO. In this study, we shed light on the origin of large voltage-induced anisotropy change in Cr/Fe/MgO. Analysis of the chemical structure of Cr/Fe/MgO revealed the existence of Cr atoms in the proximity of the Fe/MgO interface, which can affect both magnetic anisotropy (MA) and its VC. We showed that PMA and its VC can be enhanced by controlled Cr doping at the Fe/MgO interface. For Cr/Fe (5.9 Å)/Cr (0.7 Å)/MgO with an effective PMA of 0.8 MJ/m(3), a maximum value of the voltage-controlled magnetic anisotropy (VCMA) effect of 370 fJ/Vm was demonstrated due to Cr insertion.
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spelling pubmed-55196792017-07-21 Enhancement of perpendicular magnetic anisotropy and its electric field-induced change through interface engineering in Cr/Fe/MgO Kozioł-Rachwał, A. Nozaki, T. Freindl, K. Korecki, J. Yuasa, S. Suzuki, Y. Sci Rep Article Recently, perpendicular magnetic anisotropy (PMA) and its voltage control (VC) was demonstrated for Cr/Fe/MgO. In this study, we shed light on the origin of large voltage-induced anisotropy change in Cr/Fe/MgO. Analysis of the chemical structure of Cr/Fe/MgO revealed the existence of Cr atoms in the proximity of the Fe/MgO interface, which can affect both magnetic anisotropy (MA) and its VC. We showed that PMA and its VC can be enhanced by controlled Cr doping at the Fe/MgO interface. For Cr/Fe (5.9 Å)/Cr (0.7 Å)/MgO with an effective PMA of 0.8 MJ/m(3), a maximum value of the voltage-controlled magnetic anisotropy (VCMA) effect of 370 fJ/Vm was demonstrated due to Cr insertion. Nature Publishing Group UK 2017-07-20 /pmc/articles/PMC5519679/ /pubmed/28729553 http://dx.doi.org/10.1038/s41598-017-05994-7 Text en © The Author(s) 2017 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
Kozioł-Rachwał, A.
Nozaki, T.
Freindl, K.
Korecki, J.
Yuasa, S.
Suzuki, Y.
Enhancement of perpendicular magnetic anisotropy and its electric field-induced change through interface engineering in Cr/Fe/MgO
title Enhancement of perpendicular magnetic anisotropy and its electric field-induced change through interface engineering in Cr/Fe/MgO
title_full Enhancement of perpendicular magnetic anisotropy and its electric field-induced change through interface engineering in Cr/Fe/MgO
title_fullStr Enhancement of perpendicular magnetic anisotropy and its electric field-induced change through interface engineering in Cr/Fe/MgO
title_full_unstemmed Enhancement of perpendicular magnetic anisotropy and its electric field-induced change through interface engineering in Cr/Fe/MgO
title_short Enhancement of perpendicular magnetic anisotropy and its electric field-induced change through interface engineering in Cr/Fe/MgO
title_sort enhancement of perpendicular magnetic anisotropy and its electric field-induced change through interface engineering in cr/fe/mgo
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5519679/
https://www.ncbi.nlm.nih.gov/pubmed/28729553
http://dx.doi.org/10.1038/s41598-017-05994-7
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