Electric field effect on magnetization of an Fe ultrathin film

Masashi Kawaguchi, Kazutoshi Shimamura, Shimpei Ono, Shunsuke Fukami, Fumihiro Matsukura, Hideo Ohno, Daichi Chiba, Teruo Ono

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


We show the effect of an applied electric field on the magnetization of an Fe ultrathin film. An electric double layer was formed at the interface between an ionic liquid and the Fe layer by the accumulation of ions caused by applying a gate voltage, and a large electric field was exerted on the Fe film surface. The saturation magnetization increased when the electron density at the Fe surface increased. A change in the saturation magnetization of ∼50% was observed by applying a gate voltage of ±2 V.

Original languageEnglish
Article number063307
JournalApplied Physics Express
Issue number6
Publication statusPublished - 2012 Jun

ASJC Scopus subject areas

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


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