Enhancement of electric field modulation of coercivity in Pt /Co/Al-O structures by tuning Co surface oxidation

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7 Citations (Scopus)

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 languageEnglish
Article number03LT01
JournalJournal of Physics D: Applied Physics
Volume49
Issue number3
DOIs
Publication statusPublished - 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

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