Oxygen adsorption and magnetic properties of ultrathin Co/Ir(111) films

Huei Ying Ho, Jyh-Shen Tsay, Yu Shan Chen

Research output: Contribution to journalArticle

Abstract

During oxygen exposure to ultrathin Co/Ir(111) films, both the oxidative process and physical adsorption occur. The diffusion length of oxygen is around two monolayers of Co. Within this thickness, Co films are almost oxidative and ferromagnetism disappears. For thicker films with nanometer thickness, after completing the oxidative process at the beginning of oxygen exposure, the physical adsorption becomes a major process. By controlling the amount of further exposure to oxygen, the coercive force in the polar configuration can be adjusted while keeping the Kerr rotation at a nearly constant value.

Original languageEnglish
Pages (from-to)758021-758024
Number of pages4
JournalJapanese Journal of Applied Physics
Volume49
Issue number7 PART 1
DOIs
Publication statusPublished - 2010 Jul 1

    Fingerprint

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this