Magnetic damping and spin polarization of highly ordered B2 Co2FeAl thin films

被引：20

作者：

Cui, Yishen ^{[1
]}

Lu, Jiwei ^{[2
]}

Schaefer, Sebastian ^{[3
]}

Khodadadi, Behrouz ^{[3
]}

Mewes, Tim ^{[3
]}

Osofsky, Mike ^{[4
]}

Wolf, Stuart A. ^{[1
,2
]}

机构：

[1] Univ Virginia, Dept Phys, Charlottesville, VA 22904 USA

[2] Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA 22904 USA

[3] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA

[4] Naval Res Lab, Washington, DC 20375 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 116卷 / 07期

基金：

美国国家科学基金会;

关键词：

HEUSLER ALLOYS;

D O I：

10.1063/1.4893235

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Epitaxial Co2FeAl films were synthesized using the Biased Target Ion Beam Deposition technique. Post annealing yielded Co2FeAl films with an improved B2 chemical ordering. Both the magnetization and the Gilbert damping parameter were reduced with increased B2 ordering. A low damping parameter, similar to 0.002, was attained in B2 ordered Co2FeAl films without the presence of the L2(1) Heusler phase, which suggests that the B2 structure is sufficient for providing low damping in Co2FeAl. The spin polarization was similar to 53% and was insensitive to the chemical ordering. (C) 2014 AIP Publishing LLC.

引用

页数：4

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