Vertical bistable switching of spin vortex in a circular magnetic dot

N. Kikuchi, S. Okamoto, O. Kitakami, Y. Shimada, S. G. Kim, Y. Otani, K. Fukamichi

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)

Abstract

We have investigated switching behaviors of a spin-vortex core in circular magnetic dots to evaluate them as a new candidate for magnetic memory elements. The spin-vortex core with the lateral dimension of exchange length can take two possible states with spins around the dot center directing either up- or downward. These two spin configurations are very stable and their polarities can be switched by a large vertical field. The mean switching field reaches about 2.5 kOe for Ni80Fe20 dots with 1 μm in diameter and 80 nm in height. This result could open the way for developing a new bistable magnetic memory element utilizing the spin vortex.

Original languageEnglish
Pages (from-to)6548-6549
Number of pages2
JournalJournal of Applied Physics
Volume90
Issue number12
DOIs
Publication statusPublished - 2001 Dec 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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