Significant reduction of switching field and its distribution in Co/Pt nanodots with assistance of radio frequency field

Satoshi Okamoto, Nobuaki Kikuchi, Masaki Furuta, Osamu Kitakami, Takehito Shimatsu

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Microwave assisted magnetization switching (MAS) is a key technology for future ultra high-density magnetic recording. To explore the feasibility of MAS, we have studied how the magnetization switching behavior of individual Co/Pt multilayer nanodots with perpendicular magnetic anisotropy is modified by the application of rf fields. It is found that the behavior depends on the rf field amplitude. For a large rf field but much smaller than the effective perpendicular anisotropy field, the switching field can be reduced remarkably. Moreover, the broad dispersion of the switching field in the absence the of rf field also becomes quite narrow.

Original languageEnglish
Article number093005
JournalApplied Physics Express
Volume5
Issue number9
DOIs
Publication statusPublished - 2012 Sep

ASJC Scopus subject areas

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

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