Magnetization Reversal Mechanisms of Co Nanoislands

DOI Web Site 13 References

Bibliographic Information

Other Title
  • Coナノアイランドの磁化反転メカニズム
  • Co ナノアイランド ノ ジカ ハンテン メカニズム

Search this article

Abstract

An outstanding challenging in nanomagnetism is the quantitative understanding of magnetization reversal process of nanostructures. We investigate the magnetization reversal of individual Co islands on Cu(111). We measure switching fields HSW of single Co islands using spin-polarized scanning tunneling microscopy/spectroscopy at 8 K. The switching field changes with island size. The switching field increases with size and reaches a maximum value of 2.4 T at a size of 5500 atoms, and decreases for larger islands. To discuss magnetization reversal processes, we extract the energy barrier ΔE for magnetization reversal as a function of island size. Our analysis reveals a crossover of the magnetization reversal from an exchange-spring behavior to domain wall formation with increasing size at around 7500 atoms.

Journal

  • Hyomen Kagaku

    Hyomen Kagaku 35 (7), 377-382, 2014

    The Surface Science Society of Japan

References(13)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top