Skip to content
DraconiticResearch
Search Sources API
194,164 studies31 sourcesUpdated 57 min ago
PreprintCC BY 4.0arXiv

Reversible Magneto-ionic Modification of Metallic Magnetic Thin Films

  • Md Golam Hafiz
  • Hari Babu Vasili
  • Philippa Shepley
  • Mannan Ali
  • Andrew J. Britton
  • Oscar Cespedes
  • Weibin Li
  • Manuel Valvidares
  • Rohit Pachat
  • Wilfried Fotso
  • Mourad Cherif
  • Shimpei Ono
3 more authors
  • Yves Roussigne
  • Mohamed Belmeguenai
  • Gavin Burnell
Open at sourcePDFDOICite

Abstract

Magnetic multilayers with structural inversion asymmetry, perpendicular magnetic anisotropy (PMA), and large Dzyaloshinskii-Moriya interaction (DMI) are widely studied for magnetic domain wall- and skyrmion-based data processing applications. In this work, we report a controlled, nonvolatile, but reversible local modification of such a system by electrically driven oxygen migration through the metallic film structure by using ionic liquid gating. Our findings provide direct evidence for the modification of the oxidation state at the heavy metal (HM)/ferromagnet (FM) interface. As a result, we observed changes in fundamental magnetic properties, such as an increase in the effective anisotropy constant (Keff) and coercive field (Hc) with oxidation, and a decrease with the reduction of oxygen ions. Positive gate voltages relative to the thin film extract oxygen ions from the magnetic layer, significantly reducing the domain nucleation field. In contrast, negative voltages drive oxygen ions into the magnetic layer, leading to a reversible increase in the extent of domain wall pinning near saturation. We observe a corresponding decrease in the magnetic moment and DMI, with negative voltage reducing both. This magneto-ionic modulation in fully metallic structures is beneficial for spintronic device applications, particularly in field-programmable domain wall and skyrmion devices.

Versions

Related

  1. Direct observation of reversible ionic polarization at a buried solid-state battery interface
    Giovanni Ceccio, Romana Miksova, Jiri Vacik +5
    arXivPreprintCC BY 4.0Full textCondensed matterarXiv
  2. Anomalous Metallic States at Magnetic Interfaces in an Antiferromagnetic Topological Insulator Candidate DyPtBi with Ferroquadrupolar Order
    Kentaro Ueda, Hiraku Saito, Zen Ogame +6
    Physical Review XPeer-reviewedCC BY 4.0Atomic, molecular & optical physicsAPS
  3. Magneto-optical Kerr spectroscopy of exciton Rydberg states in a magnetic van der Waals heterostructure
    Astha Khandelwal, Benran Zhang, Madhusmita Jena +8
    arXivPreprintCC BY 4.0Full textCondensed matterarXiv
  4. Enhanced Magneto-Optical Kerr Effect in Nano-Magnetic Metamaterials with Near-Perfect Coherent Absorption
    Xiaofei Xiao, Tingjun Zheng, Alex Vanstone +6
    arXivPreprintarXiv licenceFull textOptics & photonicsarXiv
  5. Enhancing magneto-optical coupling and scattering from magnetic vortices by optical polarization texturing
    Vakhtang Jandieri, Chenglong Jia, Ramaz Khomeriki +4
    arXivPreprintCC BY-NC-ND 4.0Full textCondensed matterarXiv

Cite

BibTeXRIS
BibTeX
@misc{hafiz2026reversible,
  title = {{Reversible Magneto-ionic Modification of Metallic Magnetic Thin Films}},
  author = {Md Golam Hafiz and Hari Babu Vasili and Philippa Shepley and Mannan Ali and Andrew J. Britton and Oscar Cespedes and Weibin Li and Manuel Valvidares and Rohit Pachat and Wilfried Fotso and Mourad Cherif and Shimpei Ono and Yves Roussigne and Mohamed Belmeguenai and Gavin Burnell},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.18396},
  eprint = {2610.18396},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.18396},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Reversible Magneto-ionic Modification of Metallic Magnetic Thin Films
AU  - Md Golam Hafiz
AU  - Hari Babu Vasili
AU  - Philippa Shepley
AU  - Mannan Ali
AU  - Andrew J. Britton
AU  - Oscar Cespedes
AU  - Weibin Li
AU  - Manuel Valvidares
AU  - Rohit Pachat
AU  - Wilfried Fotso
AU  - Mourad Cherif
AU  - Shimpei Ono
AU  - Yves Roussigne
AU  - Mohamed Belmeguenai
AU  - Gavin Burnell
PY  - 2026
DA  - 2026/10/13
PB  - arXiv
DO  - 10.48550/arxiv.2610.18396
UR  - https://arxiv.org/abs/2610.18396
AB  - Magnetic multilayers with structural inversion asymmetry, perpendicular magnetic anisotropy (PMA), and large Dzyaloshinskii-Moriya interaction (DMI) are widely studied for magnetic domain wall- and skyrmion-based data processing applications. In this work, we report a controlled, nonvolatile, but reversible local modification of such a system by electrically driven oxygen migration through the metallic film structure by using ionic liquid gating. Our findings provide direct evidence for the modification of the oxidation state at the heavy metal (HM)/ferromagnet (FM) interface. As a result, we observed changes in fundamental magnetic properties, such as an increase in the effective anisotropy constant (Keff) and coercive field (Hc) with oxidation, and a decrease with the reduction of oxygen ions. Positive gate voltages relative to the thin film extract oxygen ions from the magnetic layer, significantly reducing the domain nucleation field. In contrast, negative voltages drive oxygen ions into the magnetic layer, leading to a reversible increase in the extent of domain wall pinning near saturation. We observe a corresponding decrease in the magnetic moment and DMI, with negative voltage reducing both. This magneto-ionic modulation in fully metallic structures is beneficial for spintronic device applications, particularly in field-programmable domain wall and skyrmion devices.
ER  -