The electric-field control of magnetism is a highly promising and potentially effective approach for realizing energy-efficient applications. Recent interest has focused on the magneto-ionic effect in synthetic antiferromagnets, driven by its potential to enable high-density data storage devices with ultra-low power consumption. However, the underlying mechanism responsible for the magneto-ionic effect on the interlayer exchange coupling remains elusive. In our work, we find that the modulation of the interlayer exchange coupling is highly sensitive to the thickness of the ferromagnetic layer. We have identified that the changes in the interlayer exchange coupling induced by the gate voltage can be associated with the magneto-ionic effects on the top ferromagnetic layer of the synthetic antiferromagnet. The direct contact between the high ion mobility oxide and the top ferromagnetic layer plays a crucial role in facilitating these effects, largely modifying the anisotropy of the layers. Our findings highlight the important role of magneto-ionic control over the properties of the top ferromagnetic layer in governing the observed modifications in the interlayer exchange coupling. This study provides crucial insight into the intricate interplay between stack structure and magneto-ionic effect on magnetic properties in synthetic antiferromagnetic thin film systems.
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19 February 2024
Research Article|
February 23 2024
Magneto-ionic modulation of the interlayer exchange interaction in synthetic antiferromagnets
Maria-Andromachi Syskaki
;
Maria-Andromachi Syskaki
a)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Validation, Visualization, Writing – original draft)
1
Singulus Technologies AG
, 63796 Kahl am Main, Germany
2
Institut für Physik, Johannes Gutenberg-Universität Mainz
, Staudingerweg 7, 55128 Mainz, Germany
a)Author to whom correspondence should be addressed: [email protected]
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Takaaki Dohi
;
Takaaki Dohi
b)
(Data curation, Formal analysis, Investigation, Methodology, Supervision, Validation, Visualization, Writing – review & editing)
2
Institut für Physik, Johannes Gutenberg-Universität Mainz
, Staudingerweg 7, 55128 Mainz, Germany
3
Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University
, Sendai, Japan
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Beatrice Bednarz
;
Beatrice Bednarz
(Data curation, Formal analysis, Methodology, Validation, Writing – review & editing)
2
Institut für Physik, Johannes Gutenberg-Universität Mainz
, Staudingerweg 7, 55128 Mainz, Germany
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Sergei Olegovich Filnov;
Sergei Olegovich Filnov
(Data curation, Formal analysis, Investigation, Methodology, Validation)
2
Institut für Physik, Johannes Gutenberg-Universität Mainz
, Staudingerweg 7, 55128 Mainz, Germany
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Sergey Alexeyevich Kasatikov
;
Sergey Alexeyevich Kasatikov
(Data curation, Investigation, Validation, Visualization)
4
Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
, Hahn-Meitner Platz 1, 14109 Berlin, Germany
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Mona Bhukta
;
Mona Bhukta
(Investigation, Methodology, Validation, Visualization, Writing – review & editing)
2
Institut für Physik, Johannes Gutenberg-Universität Mainz
, Staudingerweg 7, 55128 Mainz, Germany
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Alevtina Smekhova
;
Alevtina Smekhova
(Investigation, Methodology, Validation)
4
Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
, Hahn-Meitner Platz 1, 14109 Berlin, Germany
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Rohit Pachat
;
Rohit Pachat
(Data curation, Investigation, Methodology, Validation, Writing – review & editing)
5
Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Saclay
, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
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Johannes Wilhelmus van der Jagt
;
Johannes Wilhelmus van der Jagt
(Data curation, Investigation, Validation, Writing – review & editing)
6
Spin-Ion Technologies, C2N
, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
7
Université Paris-Saclay
, 3 rue Joliot-Curie, 91190 Gif-sur-Yvette, France
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Shimpei Ono
;
Shimpei Ono
(Methodology)
8
Central Research Institute of Electric Power Industry
, Yokosuka, Kanagawa 240-0196, Japan
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Dafiné Ravelosona
;
Dafiné Ravelosona
(Funding acquisition, Methodology, Supervision, Writing – review & editing)
5
Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Saclay
, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
6
Spin-Ion Technologies, C2N
, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
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Jürgen Langer
;
Jürgen Langer
(Funding acquisition, Resources, Supervision, Writing – review & editing)
1
Singulus Technologies AG
, 63796 Kahl am Main, Germany
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Mathias Kläui
;
Mathias Kläui
(Funding acquisition, Resources, Supervision, Validation, Writing – review & editing)
2
Institut für Physik, Johannes Gutenberg-Universität Mainz
, Staudingerweg 7, 55128 Mainz, Germany
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Liza Herrera Diez
;
Liza Herrera Diez
(Conceptualization, Funding acquisition, Methodology, Supervision, Validation, Visualization, Writing – review & editing)
5
Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Saclay
, 10 Boulevard Thomas Gobert, 91120 Palaiseau, France
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Gerhard Jakob
Gerhard Jakob
c)
(Formal analysis, Funding acquisition, Project administration, Resources, Supervision, Validation, Writing – review & editing)
2
Institut für Physik, Johannes Gutenberg-Universität Mainz
, Staudingerweg 7, 55128 Mainz, Germany
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a)Author to whom correspondence should be addressed: [email protected]
b)
Electronic mail: [email protected]
c)
Electronic mail: [email protected]
Appl. Phys. Lett. 124, 082408 (2024)
Article history
Received:
January 19 2024
Accepted:
January 26 2024
Citation
Maria-Andromachi Syskaki, Takaaki Dohi, Beatrice Bednarz, Sergei Olegovich Filnov, Sergey Alexeyevich Kasatikov, Mona Bhukta, Alevtina Smekhova, Rohit Pachat, Johannes Wilhelmus van der Jagt, Shimpei Ono, Dafiné Ravelosona, Jürgen Langer, Mathias Kläui, Liza Herrera Diez, Gerhard Jakob; Magneto-ionic modulation of the interlayer exchange interaction in synthetic antiferromagnets. Appl. Phys. Lett. 19 February 2024; 124 (8): 082408. https://doi.org/10.1063/5.0198750
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