Current-excited magnetization dynamics in narrow ferromagnetic wires

Yoshihiko Togawa, Takashi Kimura, Ken Harada, Tetsuya Akashi, Tsuyoshi Matsuda, Akira Tonomura, Yoshichika Otani

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56 Citations (Scopus)


We investigate the current-excited magnetization dynamics in a narrow ferromagnetic Permalloy wire by means of Lorentz microscopy, together with the results of simultaneous transport measurements. A detailed structural evolution of the magnetization is presented as a function of the applied current density. Local structural deformation, bidirectional displacement, and magnetization reversal are found below the Curie temperature with increasing the current density. We discuss probable mechanisms of observed features of the current-excited magnetization dynamics.

Original languageEnglish
Pages (from-to)L683-L685
JournalJapanese Journal of Applied Physics
Issue number24-28
Publication statusPublished - Jul 7 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

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


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