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A perpendicular graphene/ferromagnet electrode for spintronics

Authors :
C. Carrétéro
Marta Galbiati
Bruno Dlubak
Odile Bezencenet
Nicolas Reyren
Anke Sander
Pierre Seneor
Florian Godel
Victor Zatko
Hiroshi Naganuma
Marie-Blandine Martin
Center for Innovative Integrated Electronics Systems, Tohoku University
Tohoku University [Sendai]
Graduate School of Engineering, Tohoku University
Center for Spintronics Integrated Systems, Tohoku University
Center for Spintronics Research Network, Tohoku University
Unité mixte de physique CNRS/Thales (UMPhy CNRS/THALES)
Centre National de la Recherche Scientifique (CNRS)-THALES
Thales Research and Technology [Palaiseau]
THALES
Source :
Applied Physics Letters, Applied Physics Letters, American Institute of Physics, 2020, 116 (17), pp.173101. ⟨10.1063/1.5143567⟩, Naganuma, Hiroshi Zatko, V. Galbiati, Marta Godel, Florian Sander, Anke Carrétéro, C. Bezencenet, O. Reyren, N. Martin, M.-B. Dlubak, Bruno Seneor, Pierre 2020 A perpendicular graphene/ferromagnet electrode for spintronics Applied Physics Letters 116 173101, RODERIC. Repositorio Institucional de la Universitat de Valéncia, instname, RODERIC: Repositorio Institucional de la Universitat de Valéncia
Publication Year :
2020
Publisher :
AIP Publishing, 2020.

Abstract

We report on the large-scale integration of graphene layers over a FePd perpendicular magnetic anisotropy (PMA) platform, targeting further downscaling of spin circuits. An L10 FePd ordered alloy showing both high magneto-crystalline anisotropy and a low magnetic damping constant, is deposited by magnetron sputtering. The graphene layer is then grown on top of it by large-scale chemical vapor deposition. A step-by-step study, including structural and magnetic analyses by x-ray diffraction and Kerr microscopy, shows that the measured FePd properties are preserved after the graphene deposition process. This scheme provides a graphene protected perpendicular spin electrode showing resistance to oxidation, atomic flatness, stable crystallinity, and perpendicular magnetic properties. This, in turn, opens the way to the generalization of hybrid 2D-materials on optimized PMA platforms, sustaining the development of spintronics circuits based on perpendicular spin-sources as required, for instance, for perpendicular-magnetic random-access memory schemes.

Details

ISSN :
10773118 and 00036951
Volume :
116
Database :
OpenAIRE
Journal :
Applied Physics Letters
Accession number :
edsair.doi.dedup.....8bfaad36f9a6aff912fbe74d46c127ea
Full Text :
https://doi.org/10.1063/1.5143567