Structural investigation and magnetic properties of oxygen adsorption on ultrathin Fe(110) film

Koutaro Nishihara, Tatsushi Nomitsu, Takeshi Nakagawa, Seigi Mizuno

Research output: Contribution to journalArticle

Abstract

We have investigated oxygen induced surface structures on Fe(110) thin film and their magnetic properties using low energy electron diffraction (LEED) and surface magneto-optic Kerr effect (SMOKE). We have determined two chemisorbed structures, p(2 × 2) at 0.25 monolayer (ML) and p(3 × 2) at 0.33 ML using a dynamical LEED analysis. We found that oxygen atoms adsorb in long bridge sites on p(2 × 2) and move to three fold hollow sites on p(3 × 2) due to a steric repulsion. During chemisorption, proceeding the formation of FeO, the topmost surface of Fe film is ferromagnetic and with further oxygen adsorption the surface loses ferromagnetism in accordance with the oxide formation.

Original languageEnglish
Pages (from-to)34-39
Number of pages6
JournalSurface Science
Volume685
DOIs
Publication statusPublished - Jul 2019

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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