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

被引：32

作者：

Zhang, Yaping ^{[1
,2
]}

Fan, Xin ^{[1
]}

Wang, Weigang ^{[1
,3
]}

Kou, Xiaoming ^{[1
]}

Cao, Rong ^{[1
]}

Chen, Xing ^{[1
]}

Ni, Chaoying ^{[4
]}

Pan, Liqing ^{[2
]}

Xiao, John Q. ^{[1
]}

机构：

[1] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

[2] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China

[3] Johns Hopkins Univ, Baltimore, MD 21218 USA

[4] Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.3549188

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We studied the real-time evolution of magnetic dynamic and static properties of 20 nm CoFeB thin film during annealing at 380 degrees 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. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3549188]

引用

页数：3

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