Microwave-assisted magnetization reversal in a Co/Pd multilayer with perpendicular magnetic anisotropy

Yukio Nozaki, Naoyuki Narita, Terumitsu Tanaka, Kimihide Matsuyama

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Abstract

Microwave-assisted magnetization reversal in a rectangle of a Co/Pd multilayer with a perpendicular magnetic anisotropy is examined using vector network analyzer ferromagnetic resonance (FMR) spectroscopy. A microwave field is applied along the in-plane direction of the rectangle together with a negative dc easy-axis field smaller than the coercive field. Broadening or splitting of the peak profile in the FMR spectrum suggesting the formation of multidomain structure appears after the microwave field is applied. The dominance of microwave-assisted nucleation of magnetization is supported by the frequency dependence of the probability with which the multidomain structure appears.

Original languageEnglish
Article number082505
JournalApplied Physics Letters
Volume95
Issue number8
DOIs
Publication statusPublished - 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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