Abstract
The effect of the oxidation of the Co ferromagnetic layer on gate modulation of its coercivity was experimentally investigated in Pt / Co / Al-O heterostructures. The Co surfaces were naturally oxidized by exposing to atmosphere after Co layer growth, and the degree of oxidation was characterized by x-ray photoelectron spectroscopy (XPS). A comparison between XPS and magneto-transport results suggested that a moderate oxidation of the Co interface enhances the electric-field induced coercivity change, indicating the importance of interface engineering for electrical control of magnetization reversal.
Original language | English |
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Article number | 03LT01 |
Journal | Journal of Physics D: Applied Physics |
Volume | 49 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2015 Dec 2 |
Keywords
- electric field effect
- perpendicular magnetic anisotropy
- spintronics
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Acoustics and Ultrasonics
- Surfaces, Coatings and Films