Influence of additives on the magnetic damping constant of CoIr soft magnetic thin films with negative magnetocrystalline anisotropy

doi:10.1088/1674-1056/28/5/057505

中国物理B ›› 2019, Vol. 28 ›› Issue (5): 57505-057505.doi: 10.1088/1674-1056/28/5/057505

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Influence of additives on the magnetic damping constant of CoIr soft magnetic thin films with negative magnetocrystalline anisotropy

Tianyong Ma(马天勇), Zhi Luo(罗智), Zhiwei Li(李志伟), Liang Qiao(乔亮), Tao Wang(王涛), Fashen Li(李发伸)

Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Key Laboratory for Special Functional Materials and Structure Design of the Ministry of Education, Lanzhou University, Lanzhou 730000, China

收稿日期:2018-12-10 修回日期:2019-03-05 出版日期:2019-05-05 发布日期:2019-05-05
通讯作者: Zhiwei Li, Tao Wang E-mail:zweili@lzu.edu.cn;wtao@lzu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11574122 and 11704167) and the Fundamental Research Funds for the Central Universities, China (Grant Nos. lzujbky-2017-k20 and lzujbky-2017-31).

Influence of additives on the magnetic damping constant of CoIr soft magnetic thin films with negative magnetocrystalline anisotropy

Tianyong Ma(马天勇), Zhi Luo(罗智), Zhiwei Li(李志伟), Liang Qiao(乔亮), Tao Wang(王涛), Fashen Li(李发伸)

Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Key Laboratory for Special Functional Materials and Structure Design of the Ministry of Education, Lanzhou University, Lanzhou 730000, China

Received:2018-12-10 Revised:2019-03-05 Online:2019-05-05 Published:2019-05-05
Contact: Zhiwei Li, Tao Wang E-mail:zweili@lzu.edu.cn;wtao@lzu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11574122 and 11704167) and the Fundamental Research Funds for the Central Universities, China (Grant Nos. lzujbky-2017-k20 and lzujbky-2017-31).

摘要/Abstract

摘要：

The oriented (CoIr)_100-xP_x (P=B, Ni, and SiO₂) soft magnetic films are prepared. Their morphology is measured using transmission electron microscopy (TEM), and reveals that these films exhibit good crystallinity and high degree of the c-axis orientation. The magnetic properties are thoroughly investigated as a function of doping x. Our results show that all of these films possess negative magnetocrystalline anisotropy as required by possible applications. Both the intrinsic and extrinsic contributions are considered to interpret the broadening of the ferromagnetic resonance spectral linewidth. The intrinsic Gilbert damping is identified as the main cause of the linewidth broadening, while the extrinsic part originating from inhomogeneities only plays a minor role. More interestingly, our results show that the damping constant can be controlled by using the doping method.

关键词: magnetic damping constant additives, negative magnetocrystalline anisotropy

Abstract:

Key words: magnetic damping constant additives, negative magnetocrystalline anisotropy

中图分类号: (Dynamic properties?)

75.40.Gb

76.30.Lh (Other ions and impurities) 75.50.-y (Studies of specific magnetic materials)

马天勇, 罗智, 李志伟, 乔亮, 王涛, 李发伸. Influence of additives on the magnetic damping constant of CoIr soft magnetic thin films with negative magnetocrystalline anisotropy[J]. 中国物理B, 2019, 28(5): 57505-057505.

Tianyong Ma(马天勇), Zhi Luo(罗智), Zhiwei Li(李志伟), Liang Qiao(乔亮), Tao Wang(王涛), Fashen Li(李发伸). Influence of additives on the magnetic damping constant of CoIr soft magnetic thin films with negative magnetocrystalline anisotropy[J]. Chin. Phys. B, 2019, 28(5): 57505-057505.

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Influence of additives on the magnetic damping constant of CoIr soft magnetic thin films with negative magnetocrystalline anisotropy

Influence of additives on the magnetic damping constant of CoIr soft magnetic thin films with negative magnetocrystalline anisotropy

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