Reversible vs. irreversible voltage manipulation of interfacial magnetic anisotropy in Pt/Co/oxide multilayers

Aymen Fassatoui; Jose Pena Garcia; Jan Vogel; Laurent Ranno; Anne Bernand-Mantel; Hélène Béa; Sergio Pizzini; Stefania Pizzini

doi:10.1103/PhysRevApplied.14.064041

Reversible vs. irreversible voltage manipulation of interfacial magnetic anisotropy in Pt/Co/oxide multilayers

Mesoscale and Nanoscale Physics 2021-01-04 v1

Authors: Aymen Fassatoui , Jose Pena Garcia , Jan Vogel , Laurent Ranno , Anne Bernand-Mantel , Hélène Béa , Sergio Pizzini , Stefania Pizzini

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Abstract

The perpendicular magnetic anisotropy at the Co/oxide interface in Pt/Co/MOx (MOx = MgOx, AlOx, TbOx) was modified by an electric field using a 10 nm-thick ZrO2 as a solid electrolyte. The large voltage-driven modification of interfacial magnetic anisotropy and the non-volatility of the effect is explained in terms of the migration of oxygen ions towards/away from the Co/MOx interface. While the effect is reversible in Pt/Co/AlOx and Pt/Co/TbOx, where the Co layer can be oxidised or reduced, in Pt/Co/MgOx the effect has been found to be irreversible. We propose that these differences may be related to the different nature of the ionic conduction within the MOx layers.

Keywords

interfacial magnetic anisotropy voltage manipulation Pt/Co/oxide multilayers solid electrolyte oxygen ion migration reversible and irreversible effects spintronics

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@article{arxiv.2007.12570,
  title  = {Reversible vs. irreversible voltage manipulation of interfacial magnetic anisotropy in Pt/Co/oxide multilayers},
  author = {Aymen Fassatoui and Jose Pena Garcia and Jan Vogel and Laurent Ranno and Anne Bernand-Mantel and Hélène Béa and Sergio Pizzini and Stefania Pizzini},
  journal= {arXiv preprint arXiv:2007.12570},
  year   = {2021}
}

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Reversible vs. irreversible voltage manipulation of interfacial magnetic anisotropy in Pt/Co/oxide multilayers

Abstract

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