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

Fassatoui, A., Garcia, J., Ranno, L., Vogel, J., Bernand-Mantel, A., Bea, H., et al. (2020). Reversible and Irreversible Voltage Manipulation of Interfacial Magnetic Anisotropy in Pt / Co /Oxide Multilayers. PHYSICAL REVIEW APPLIED, 14(6) [10.1103/PhysRevApplied.14.064041].

Reversible and Irreversible Voltage Manipulation of Interfacial Magnetic Anisotropy in Pt / Co /Oxide Multilayers

Pizzini S.;
2020

Abstract

The perpendicular magnetic anisotropy at the Co-oxide interface in Pt/Co/MOx (MOx=MgOx, AlOx, TbOx) is modified by an electric field using a 10-nm-thick ZrO2 as a solid electrolyte. The large voltage-driven modification of the interfacial magnetic anisotropy and the nonvolatility of the effect is explained in terms of the migration of oxygen ions toward or 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 oxidized or reduced, in Pt/Co/MgOx the effect is found to be irreversible. We propose that these differences may be related to the different nature of the ionic conduction within the MOx layers.
Articolo in rivista - Articolo scientifico
Aluminum compounds; Cobalt compounds; Electric fields; Magnesium compounds; Magnetic anisotropy; Magnetic multilayers; Magnetism; Solid electrolytes; Terbium compounds; Zirconia;
English
2020
14
6
064041
reserved
Fassatoui, A., Garcia, J., Ranno, L., Vogel, J., Bernand-Mantel, A., Bea, H., et al. (2020). Reversible and Irreversible Voltage Manipulation of Interfacial Magnetic Anisotropy in Pt / Co /Oxide Multilayers. PHYSICAL REVIEW APPLIED, 14(6) [10.1103/PhysRevApplied.14.064041].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/298362
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