Interfacial effect on the ferromagnetic damping of CoFeB thin films with different under-layers

Shaohai Chen; Minghong Tang; Zongzhi Zhang; B. Ma; S. T. Lou; Q. Y. Jin

doi:10.1063/1.4813763

Interfacial effect on the ferromagnetic damping of CoFeB thin films with different under-layers

Shaohai Chen
, Minghong Tang
, Zongzhi Zhang^*
, B. Ma
, S. T. Lou
, Q. Y. Jin

^*此作品的通讯作者

科研成果: 期刊稿件 › 文章 › 同行评审

35 引用（Scopus）

摘要

Interfacial effects on magnetic properties are investigated for the as-deposited and annealed Co₆₄Fe₁₆B₂₀ films with different under-layers (Cu, Ru, or Pd). The intrinsic Gilbert damping factor is inferred to be slightly lower than the obtained value of 0.007. We found that both the in-plane coercivity H_c and ferromagnetic resonance linewidth ΔH_pp rely on the interfacial morphology. The Cu under-layer provides a rough surface, which offers an extra contribution to the ΔH_pp. The surface roughness was greatly enhanced by post-annealing for Cu, while little affected for Ru and Pd. Resultingly, the ΔH_pp and H_c of Cu/CoFeB increase significantly after annealing. However, for the annealed Ru/CoFeB sample, the ΔH_pp even decreases implying Ru is a proper under-layer material for CoFeB-based spintronic devices.

源语言	英语
文章编号	032402
期刊	Applied Physics Letters
卷	103
期	3
DOI	https://doi.org/10.1063/1.4813763
出版状态	已出版 - 15 7月 2013
已对外发布	是

访问文件

10.1063/1.4813763

其它文件与链接

链接到 Scopus 的出版物

引用此

@article{4b790d818a574252a5288818a517f621,

title = "Interfacial effect on the ferromagnetic damping of CoFeB thin films with different under-layers",

abstract = "Interfacial effects on magnetic properties are investigated for the as-deposited and annealed Co64Fe16B20 films with different under-layers (Cu, Ru, or Pd). The intrinsic Gilbert damping factor is inferred to be slightly lower than the obtained value of 0.007. We found that both the in-plane coercivity Hc and ferromagnetic resonance linewidth ΔHpp rely on the interfacial morphology. The Cu under-layer provides a rough surface, which offers an extra contribution to the ΔHpp. The surface roughness was greatly enhanced by post-annealing for Cu, while little affected for Ru and Pd. Resultingly, the ΔHpp and Hc of Cu/CoFeB increase significantly after annealing. However, for the annealed Ru/CoFeB sample, the ΔHpp even decreases implying Ru is a proper under-layer material for CoFeB-based spintronic devices.",

author = "Shaohai Chen and Minghong Tang and Zongzhi Zhang and B. Ma and Lou, \{S. T.\} and Jin, \{Q. Y.\}",

year = "2013",

month = jul,

day = "15",

doi = "10.1063/1.4813763",

language = "英语",

volume = "103",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "3",

}

TY - JOUR

T1 - Interfacial effect on the ferromagnetic damping of CoFeB thin films with different under-layers

AU - Chen, Shaohai

AU - Tang, Minghong

AU - Zhang, Zongzhi

AU - Ma, B.

AU - Lou, S. T.

AU - Jin, Q. Y.

PY - 2013/7/15

Y1 - 2013/7/15

N2 - Interfacial effects on magnetic properties are investigated for the as-deposited and annealed Co64Fe16B20 films with different under-layers (Cu, Ru, or Pd). The intrinsic Gilbert damping factor is inferred to be slightly lower than the obtained value of 0.007. We found that both the in-plane coercivity Hc and ferromagnetic resonance linewidth ΔHpp rely on the interfacial morphology. The Cu under-layer provides a rough surface, which offers an extra contribution to the ΔHpp. The surface roughness was greatly enhanced by post-annealing for Cu, while little affected for Ru and Pd. Resultingly, the ΔHpp and Hc of Cu/CoFeB increase significantly after annealing. However, for the annealed Ru/CoFeB sample, the ΔHpp even decreases implying Ru is a proper under-layer material for CoFeB-based spintronic devices.

AB - Interfacial effects on magnetic properties are investigated for the as-deposited and annealed Co64Fe16B20 films with different under-layers (Cu, Ru, or Pd). The intrinsic Gilbert damping factor is inferred to be slightly lower than the obtained value of 0.007. We found that both the in-plane coercivity Hc and ferromagnetic resonance linewidth ΔHpp rely on the interfacial morphology. The Cu under-layer provides a rough surface, which offers an extra contribution to the ΔHpp. The surface roughness was greatly enhanced by post-annealing for Cu, while little affected for Ru and Pd. Resultingly, the ΔHpp and Hc of Cu/CoFeB increase significantly after annealing. However, for the annealed Ru/CoFeB sample, the ΔHpp even decreases implying Ru is a proper under-layer material for CoFeB-based spintronic devices.

UR - https://www.scopus.com/pages/publications/84881505360

U2 - 10.1063/1.4813763

DO - 10.1063/1.4813763

M3 - 文章

AN - SCOPUS:84881505360

SN - 0003-6951

VL - 103

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 3

M1 - 032402

ER -

Interfacial effect on the ferromagnetic damping of CoFeB thin films with different under-layers

摘要

访问文件

其它文件与链接

指纹

引用此