Giant modulation of the magnetic domain size induced by an electric field

Abstract

The electric field (EF) effect on the magnetic domain structure of a Pt/Co system was studied, where an EF was applied to the top surface of the Co layer. The width of the maze domain was significantly modified by the application of the EF at a temperature slightly below the Curie temperature. After a detailed analysis, a change in the exchange stiffness induced by the EF application was suggested to dominate the modulation of the domain width observed in the experiment. The accumulation of electrons at the surface of the Co layer resulted in an increase of the exchange stiffness and the Curie temperature. The result was consistent with the recent theoretical prediction.

11 pages, 4 figures

References in corpus (6)

• Creep and flow regimes of magnetic domain wall motion in ultrathin Pt/Co/Pt films with perpendicular anisotropy
• Finite electric field effects in the large perpendicular magnetic anisotropy surface Pt/Fe/Pt(001)
• Voltage-assisted Magnetization Switching in Ultrathin Fe80Co20 Alloy Layers
• Domain structure in CoFeB thin films with perpendicular magnetic anisotropy
• Voltage-Gated Modulation of Domain Wall Velocity in an Ultrathin Metallic Ferromagnet
• Switching local magnetization by electric-field-induced domain wall motion

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