Microwave assisted resonant domain wall nucleation in permalloy nanowires

Masamitsu Hayashi, Yukiko K. Takahashi, Seiji Mitani

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We have designed a system to study microwave assisted domain wall nucleation in permalloy nanowires. We find a substantial decrease in the nucleation field when microwave fields are applied, in comparison to pulse fields. A clear resonance peak is observed in the frequency dependence of the nucleation field, which coincides with the uniform mode ferromagnetic resonance frequency. Owing to the well-defined nucleation process, the switching field distribution is small in contrast to previous reports. Our results show that localized microwave field provides an efficient tool for injecting domain walls into magnetic nanowires.

Original languageEnglish
Article number172406
JournalApplied Physics Letters
Volume101
Issue number17
DOIs
Publication statusPublished - 2012 Oct 22
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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