@article{147bca349cc340048f642cb02b50c789,
title = "Enhancement of electric field modulation of coercivity in Pt /Co/Al-O structures by tuning Co surface oxidation",
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.",
keywords = "electric field effect, perpendicular magnetic anisotropy, spintronics",
author = "Junichi Shiogai and Tatsuro Ohashi and Tim Yang and Makoto Kohda and Takeshi Seki and Koki Takanashi and Junsaku Nitta",
note = "Funding Information: This work was partly supported by Grants-in-Aid from JSPS 22226001, 24684019, 25220604 and 15H05699, and by ImPACT Program of Council for Science, Technology and Innovation, and NEDO. The authors acknowledge K Saito and T Sugiyama for technical assistances in film deposition using the ion beam sputtering system and H Saito for XPS measurements. Publisher Copyright: {\textcopyright} 2016 IOP Publishing Ltd.",
year = "2015",
month = dec,
day = "2",
doi = "10.1088/0022-3727/49/3/03LT01",
language = "English",
volume = "49",
journal = "Journal Physics D: Applied Physics",
issn = "0022-3727",
publisher = "IOP Publishing Ltd.",
number = "3",
}