Enhancement of ferromagnetic resonance in Al2O3-doped Co2FeAl Heusler alloy film prepared by oblique sputtering

doi:10.1088/1674-1056/23/10/106201

Abstract Large and variable in-plane uniaxial magnetic anisotropy in a nanocrystalline (Co₂FeAl)_97.8(Al₂O₃)_2.2 soft magnetic thin film is obtained by an oblique sputtering method without being induced by magnetic field or post annealing. The in-plane uniaxial magnetic anisotropy varies from 50 Oe to 180 Oe (1 Oe=79.5775 A·m^-1) by adjusting the sample's position. As a result, the ferromagnetic resonance frequency of the film increases from 1.9 GHz to 3.75 GHz.

Keywords: uniaxial magnetic anisotropy oblique sputtering ferromagnetic resonance nanocrystalline thin films

Received: 21 December 2013
Revised: 29 May 2014
Accepted manuscript online:

PACS:	62.25.Fg	(High-frequency properties, responses to resonant or transient (time-dependent) fields)
	75.70.-i	(Magnetic properties of thin films, surfaces, and interfaces)
	75.30.Gw	(Magnetic anisotropy)
	71.55.Ak	(Metals, semimetals, and alloys)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11074040), the Key Project of Shandong Provincial Department of Science and Technology, China (Grant No. ZR2012FZ006), and the Fujian Provincial Science Foundation for Distinguished Young Scholars, China (Grant No. 2010J06001).

Corresponding Authors: Li Shan-Dong
E-mail: lishd@qdu.edu.cn,_dylsd007@163.com

About author: 62.25.Fg; 75.70.-I; 75.30.Gw; 71.55.Ak

Cite this article:

Li Shan-Dong (李山东), Cai Zhi-Yi (蔡志义), Xu Jie (徐洁), Cao Xiao-Qin (曹晓琴), Du Hong-Lei (杜洪磊), Xue Qian (薛倩), Gao Xiao-Yang (高小洋), Xie Shi-Ming (谢施名) Enhancement of ferromagnetic resonance in Al₂O₃-doped Co₂FeAl Heusler alloy film prepared by oblique sputtering 2014 Chin. Phys. B 23 106201


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Enhancement of ferromagnetic resonance in Al2O3-doped Co2FeAl Heusler alloy film prepared by oblique sputtering

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Enhancement of ferromagnetic resonance in Al₂O₃-doped Co₂FeAl Heusler alloy film prepared by oblique sputtering