Characteristic field angular dependence of magnetization switching assisted by spin wave excitation

Takeshi Seki, Kyoko Hotta, Hiroshi Imamura, Yukio Nozaki, Koki Takanashi

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Abstract

We found the characteristic dependence of magnetization switching assisted by spin wave excitation on the magnetic field angle (θ) for exchange-coupled L10-FePt/Permalloy bilayers, where θ was the angle from the easy magnetization axis of L10-FePt. Without the spin wave being excited, an incoherent switching occurred through the domain wall motion. The frequency for the switching field (Hsw) reduction under the spin wave excitation did not depend on θ. This characteristic dependence is attributable to less variation in the resonance frequencies of the spin waves against θ. We also increased the efficiency of the H sw reduction further with θ.

Original languageEnglish
Article number122403
JournalApplied Physics Letters
Volume103
Issue number12
DOIs
Publication statusPublished - 2013 Sep 16

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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