Reversible control of Co magnetism by voltage induced oxidation

Abstract

We demonstrate that magnetic properties of ultra-thin Co films adjacent to Gd2O3 gate oxides can be directly manipulated by voltage. The Co films can be reversibly changed from an optimally-oxidized state with a strong perpendicular magnetic anisotropy to a metallic state with an in-plane magnetic anisotropy, or to an oxidized state with nearly zero magnetization, depending on the polarity and time duration of the applied electric fields. Consequently, an unprecedentedly large change of magnetic anisotropy energy up to 0.73 erg/cm2 has been realized in a nonvolatile manner using gate voltages of only a few volts. These results open a new route to achieve ultra-low energy magnetization manipulation in spintronic devices.

arXiv comment12 pages, 9 figures, including supplemental materials. Phys. Rev. Lett., in press (Editors' Suggestion, featured in Physics)

References in corpus (8)

• Spintronics: Fundamentals and applications
• Anomalous Hall effect
• Spin Transfer Torques
• Surface Magnetoelectric Effect in Ferromagnetic Metal Films
• First-principles investigation of the very large Perpendicular Magnetic Anisotropy at Fe|MgO Interfaces
• Finite electric field effects in the large perpendicular magnetic anisotropy surface Pt/Fe/Pt(001)
• Analysis of anisotropy crossover due to oxygen in Pt/Co/MOx trilayer
• Electronic structure investigation of CoO by means of soft X-ray scattering

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• Interface-Induced Phenomena in Magnetism
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• Beyond the Interface Limit: Structural and Magnetic Depth Profiles of Voltage-Controlled Magneto-Ionic Heterostructures
• Elucidating the Voltage Controlled Magnetic Anisotropy
• Giant voltage control of spin Hall nano-oscillator damping
• Fast magneto-ionic switching of interface anisotropy using yttria-stabilized zirconia gate oxide
• Electric-field-induced changes of magnetic moments and magnetocrystalline anisotropy in ultrathin cobalt films
• Gate-controlled skyrmion and domain wall chirality
• Observation of hydrogen-induced Dzyaloshinskii-Moriya interaction and reversible switching of magnetic chirality
• High-Energy Quasiparticle Injection into Mesoscopic Superconductors
• Ionic Tuning of Cobaltites at the Nanoscale
• Synthetic chiral magnets promoted by the Dzyaloshinskii-Moriya interaction
• Voltage-controlled antiferromagnetism in magnetic tunnel junctions
• Effects of Oxidation of Top and Bottom Interfaces on the Electric, Magnetic, and Spin-Orbit Torque Properties of Pt/Co/AlOx Trilayers
• Emerging spintronics phenomena and applications
• Nitrogen-Based Magneto-Ionic Manipulation of Exchange Bias in CoFe/MnN Heterostructures
• Voltage control of skyrmions: creation, annihilation and zero-magnetic field stablization
• Electrically Enhanced Exchange Bias via Solid State Magneto-Ionics
• Strain-Induced Reversible Manipulation of Orbital Magnetic Moments in Ni/Cu Multilayers on Ferroelectric BaTiO3
• Kinetics of ion migration in the electric field-driven manipulation of magnetic anisotropy of Pt/Co/oxide multilayers
• Reversible vs. irreversible voltage manipulation of interfacial magnetic anisotropy in Pt/Co/oxide multilayers
• Interfacial-Redox-Induced Tuning of Superconductivity in YBa${}_2$Cu${}_3$O${}_{7-\delta }$
• Solid-state lithium-ion supercapacitor for voltage control of skyrmions
• Electric field control of RKKY coupling through solid-state ionics
• Interfacial Magnetism in Complex Oxide Heterostructures Probed by Neutrons and X-rays
• Ion irradiation and implantation modifications of magneto-ionically induced exchange bias in Gd/NiCoO
• Electrically programmable magnetic coupling in an Ising network exploiting solid-state ionic gating
• Voltage-controlled magnetism enabled by resistive switching
• Perpendicular magnetic anisotropy in as-deposited CoFeB/MgO thin films
• Hydroxide-based magneto-ionics: electric-field control of reversible paramagnetic-to-ferromagnetic switch in $\alpha$-Co(OH)${}_2$ films
• Domain configurations in Co/Pd and L10-FePt nanowire arrays with perpendicular magnetic anisotropy
• Band gap and pseudocapacitance of Gd${}_2$O${}_3$ doped with Ni${}_{0.5}$Zn${}_{0.5}$Fe${}_2$O${}_4$
• Gate-tunable Exchange Bias and Voltage-controlled Magnetization Switching in a van der Waals Ferromagnet
• Microscopic origin of electric-field-induced modulation of Curie temperature in cobalt
• Tuning the dynamics of chiral domain walls of ferrimagnetic films with the magneto-ionic effect
• Control of the magnetic anisotropy in multi-repeat Pt/Co/Al heterostructures using magneto-ionic gating
• Sum rules for x-ray circular and linear dichroism based on complete magnetic multipole basis
• Antiferromagnetic Coupling between Surface and Bulk Magnetization and Anomalous Magnetic Transport in Electro-deposited Co Film
• In situ soft x-ray absorption spectroscopic study of Fe/MgO interfaces
• Electric-Field Control of the Interlayer Exchange Coupling for Magnetization Switching
• Temperature dependence of interlayer coupling in perpendicular magnetic tunnel junctions with GdOx barriers
• A Thermodynamic Core using Voltage-Controlled Spin-Orbit-Torque Magnetic Tunnel Junctions
• Ionically-Driven Synthesis and Exchange Bias in Mn${}_4$N/MnN${}_x$ Heterostructures
• Manipulation of magnetization in Pd(100) ultrathin films with quantum well structure using modification of Schottky barrier potentials
• Enhanced spin transfer torque in platinum/ferromagnetic-metal structures by optimizing the platinum thickness
• Direct surface charging and alkali-metal doping for tuning the interlayer magnetic order in planar nanostructures
• Nonvolatile ferroelectric field control of the anomalous Hall effect in BiFeO3/SrRuO3 bilayer
• Influences of interfacial oxidization on surface magnetic energy, magnetic damping and spin-orbit-torques in Pt / ferromagnet / capping structures