Study and tailoring spin dynamic properties of CoFeB during rapid thermal annealing

Yaping Zhang; Xin Fan; Weigang Wang; Xiaoming Kou; Rong Cao; Xing Chen; Chaoying Ni; Liqing Pan; John Q. Xiao

doi:10.1063/1.3549188

Study and tailoring spin dynamic properties of CoFeB during rapid thermal annealing

Yaping Zhang, Xin Fan, Weigang Wang, Xiaoming Kou, Rong Cao, Xing Chen, Chaoying Ni, Liqing Pan, John Q. Xiao

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

33 Scopus citations

Abstract

We studied the real-time evolution of magnetic dynamic and static properties of 20 nm CoFeB thin film during annealing at 380 °C. The ferromagnetic resonance linewidth quickly reduces by 30% within 300 s annealing, and monotonically increases upon longer annealing. The magnetic static coercivity shows similar trend. The underlying physical relation between linewidth and anisotropy can be connected by the two-magnon scattering theory. By doping of Nb into CoFeB films, the damping was maintained at a low value within 2000 s annealing. This method to tailor the dynamic properties of CoFeB may benefit the development of magnetics and spintronics based microwave devices.

Original language	English (US)
Article number	042506
Journal	Applied Physics Letters
Volume	98
Issue number	4
DOIs	https://doi.org/10.1063/1.3549188
State	Published - Jan 24 2011
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Study and tailoring spin dynamic properties of CoFeB during rapid thermal annealing",

abstract = "We studied the real-time evolution of magnetic dynamic and static properties of 20 nm CoFeB thin film during annealing at 380 °C. The ferromagnetic resonance linewidth quickly reduces by 30% within 300 s annealing, and monotonically increases upon longer annealing. The magnetic static coercivity shows similar trend. The underlying physical relation between linewidth and anisotropy can be connected by the two-magnon scattering theory. By doping of Nb into CoFeB films, the damping was maintained at a low value within 2000 s annealing. This method to tailor the dynamic properties of CoFeB may benefit the development of magnetics and spintronics based microwave devices.",

author = "Yaping Zhang and Xin Fan and Weigang Wang and Xiaoming Kou and Rong Cao and Xing Chen and Chaoying Ni and Liqing Pan and Xiao, {John Q.}",

note = "Funding Information: This work was supported by the Department of Energy under Grant No. DE-FG02-07ER46374.",

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T1 - Study and tailoring spin dynamic properties of CoFeB during rapid thermal annealing

AU - Zhang, Yaping

AU - Fan, Xin

AU - Wang, Weigang

AU - Kou, Xiaoming

AU - Cao, Rong

AU - Chen, Xing

AU - Ni, Chaoying

AU - Pan, Liqing

AU - Xiao, John Q.

N1 - Funding Information: This work was supported by the Department of Energy under Grant No. DE-FG02-07ER46374.

PY - 2011/1/24

Y1 - 2011/1/24

N2 - We studied the real-time evolution of magnetic dynamic and static properties of 20 nm CoFeB thin film during annealing at 380 °C. The ferromagnetic resonance linewidth quickly reduces by 30% within 300 s annealing, and monotonically increases upon longer annealing. The magnetic static coercivity shows similar trend. The underlying physical relation between linewidth and anisotropy can be connected by the two-magnon scattering theory. By doping of Nb into CoFeB films, the damping was maintained at a low value within 2000 s annealing. This method to tailor the dynamic properties of CoFeB may benefit the development of magnetics and spintronics based microwave devices.

AB - We studied the real-time evolution of magnetic dynamic and static properties of 20 nm CoFeB thin film during annealing at 380 °C. The ferromagnetic resonance linewidth quickly reduces by 30% within 300 s annealing, and monotonically increases upon longer annealing. The magnetic static coercivity shows similar trend. The underlying physical relation between linewidth and anisotropy can be connected by the two-magnon scattering theory. By doping of Nb into CoFeB films, the damping was maintained at a low value within 2000 s annealing. This method to tailor the dynamic properties of CoFeB may benefit the development of magnetics and spintronics based microwave devices.

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Study and tailoring spin dynamic properties of CoFeB during rapid thermal annealing

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