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

Yukio Nozaki; Naoyuki Narita; Terumitsu Tanaka; Kimihide Matsuyama

doi:10.1063/1.3213559

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

Yukio Nozaki, Naoyuki Narita, Terumitsu Tanaka, Kimihide Matsuyama

Research output: Contribution to journal › Article › peer-review

82 Citations (Scopus)

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 language	English
Article number	082505
Journal	Applied Physics Letters
Volume	95
Issue number	8
DOIs	https://doi.org/10.1063/1.3213559
Publication status	Published - 2009
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Microwave-assisted magnetization reversal in a Co/Pd multilayer with perpendicular magnetic anisotropy",

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.",

author = "Yukio Nozaki and Naoyuki Narita and Terumitsu Tanaka and Kimihide Matsuyama",

note = "Funding Information: This research was partially supported by the Storage Research Consortium (SRC) and Grant-in-Aid for Young Scientists (A), Grant No. 20686025, 2008, from the Ministry of Education, Culture, Sports, Science and Technology, Japan.",

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T1 - Microwave-assisted magnetization reversal in a Co/Pd multilayer with perpendicular magnetic anisotropy

AU - Nozaki, Yukio

AU - Narita, Naoyuki

AU - Tanaka, Terumitsu

AU - Matsuyama, Kimihide

N1 - Funding Information: This research was partially supported by the Storage Research Consortium (SRC) and Grant-in-Aid for Young Scientists (A), Grant No. 20686025, 2008, from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

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

Abstract

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