Direct-current effects on magnetization reversal properties of submicron-size Permalloy patterns for radio-frequency devices

Hanqiao Zhang; Axel Hoffmann; Ralu Divan; Pingshan Wang

doi:10.1063/1.3271777

Direct-current effects on magnetization reversal properties of submicron-size Permalloy patterns for radio-frequency devices

Hanqiao Zhang, Axel Hoffmann, Ralu Divan, Pingshan Wang

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

Abstract

Ferromagnetic resonance (FMR) spectroscopy is used to measure direct-current (dc) effects on the magnetization reversal properties of submicron-sized lateral patterned magnetic material. The observed FMR frequency-field relationship shows that for both 240 and 550 nm wide Permalloy (Py) nanowires the coercivity is reduced by ∼33% when a 50 mA dc passes through the transmission line where the nanowires are incorporated. The temperature dependence of the coercivity has a T relationship which suggests the coherent rotation mode tendency in such 100 nm thick Py nanowires.

Original language	English (US)
Article number	232503
Journal	Applied Physics Letters
Volume	95
Issue number	23
DOIs	https://doi.org/10.1063/1.3271777
State	Published - Dec 18 2009
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3271777

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title = "Direct-current effects on magnetization reversal properties of submicron-size Permalloy patterns for radio-frequency devices",

abstract = "Ferromagnetic resonance (FMR) spectroscopy is used to measure direct-current (dc) effects on the magnetization reversal properties of submicron-sized lateral patterned magnetic material. The observed FMR frequency-field relationship shows that for both 240 and 550 nm wide Permalloy (Py) nanowires the coercivity is reduced by ∼33% when a 50 mA dc passes through the transmission line where the nanowires are incorporated. The temperature dependence of the coercivity has a T relationship which suggests the coherent rotation mode tendency in such 100 nm thick Py nanowires.",

author = "Hanqiao Zhang and Axel Hoffmann and Ralu Divan and Pingshan Wang",

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AU - Zhang, Hanqiao

AU - Hoffmann, Axel

AU - Divan, Ralu

AU - Wang, Pingshan

PY - 2009/12/18

Y1 - 2009/12/18

N2 - Ferromagnetic resonance (FMR) spectroscopy is used to measure direct-current (dc) effects on the magnetization reversal properties of submicron-sized lateral patterned magnetic material. The observed FMR frequency-field relationship shows that for both 240 and 550 nm wide Permalloy (Py) nanowires the coercivity is reduced by ∼33% when a 50 mA dc passes through the transmission line where the nanowires are incorporated. The temperature dependence of the coercivity has a T relationship which suggests the coherent rotation mode tendency in such 100 nm thick Py nanowires.

AB - Ferromagnetic resonance (FMR) spectroscopy is used to measure direct-current (dc) effects on the magnetization reversal properties of submicron-sized lateral patterned magnetic material. The observed FMR frequency-field relationship shows that for both 240 and 550 nm wide Permalloy (Py) nanowires the coercivity is reduced by ∼33% when a 50 mA dc passes through the transmission line where the nanowires are incorporated. The temperature dependence of the coercivity has a T relationship which suggests the coherent rotation mode tendency in such 100 nm thick Py nanowires.

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