Magnetic damping in perpendicular [Pt/Co]3/MnIr multilayers

Xiao Yu Yang; Wei Li; Jia Qi Yan; Ya Jie Bian; Yu Yi Zhang; Shi Tao Lou; Zong Zhi Zhang; X. L. Zhang; Q. Y. Jin

doi:10.1016/j.jmmm.2019.165286

Magnetic damping in perpendicular [Pt/Co]₃/MnIr multilayers

Xiao Yu Yang
, Wei Li
, Jia Qi Yan
, Ya Jie Bian
, Yu Yi Zhang
, Shi Tao Lou^*
, Zong Zhi Zhang
, X. L. Zhang
, Q. Y. Jin

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We studied the influence of Pt, Co and MnIr layer on the exchange bias field H_E and coercive field H_C in perpendicular exchange-biased [Pt/Co]₃/MnIr multilayers by magneto-optical Kerr effect. As the thickness of the Pt layer increases, the perpendicular magnetic anisotropy constant K_u first increases and then reaches to saturation, which is resulted from the competition between perpendicular anisotropy and interfacial short-range interaction. The saturation damping constant α₀ of the sample increases from about 0.062 to 0.122 when the Pt thickness increases from 0.5 nm to 1.5 nm. However, α₀ increases with the decrease of Co thickness. We attributed both of these mainly to spin pumping effect.

Original language	English
Article number	165286
Journal	Journal of Magnetism and Magnetic Materials
Volume	487
DOIs	https://doi.org/10.1016/j.jmmm.2019.165286
State	Published - 1 Oct 2019
Externally published	Yes

Keywords

Damping
Perpendicular exchange bias
Ultrafast spin dynamics

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10.1016/j.jmmm.2019.165286

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@article{fce728a421534c5b993f85c1ed29dd6c,

title = "Magnetic damping in perpendicular [Pt/Co]3/MnIr multilayers",

abstract = "We studied the influence of Pt, Co and MnIr layer on the exchange bias field HE and coercive field HC in perpendicular exchange-biased [Pt/Co]3/MnIr multilayers by magneto-optical Kerr effect. As the thickness of the Pt layer increases, the perpendicular magnetic anisotropy constant Ku first increases and then reaches to saturation, which is resulted from the competition between perpendicular anisotropy and interfacial short-range interaction. The saturation damping constant α0 of the sample increases from about 0.062 to 0.122 when the Pt thickness increases from 0.5 nm to 1.5 nm. However, α0 increases with the decrease of Co thickness. We attributed both of these mainly to spin pumping effect.",

keywords = "Damping, Perpendicular exchange bias, Ultrafast spin dynamics",

author = "Yang, \{Xiao Yu\} and Wei Li and Yan, \{Jia Qi\} and Bian, \{Ya Jie\} and Zhang, \{Yu Yi\} and Lou, \{Shi Tao\} and Zhang, \{Zong Zhi\} and Zhang, \{X. L.\} and Jin, \{Q. Y.\}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = oct,

day = "1",

doi = "10.1016/j.jmmm.2019.165286",

language = "英语",

volume = "487",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Magnetic damping in perpendicular [Pt/Co]3/MnIr multilayers

AU - Yang, Xiao Yu

AU - Li, Wei

AU - Yan, Jia Qi

AU - Bian, Ya Jie

AU - Zhang, Yu Yi

AU - Lou, Shi Tao

AU - Zhang, Zong Zhi

AU - Zhang, X. L.

AU - Jin, Q. Y.

PY - 2019/10/1

Y1 - 2019/10/1

N2 - We studied the influence of Pt, Co and MnIr layer on the exchange bias field HE and coercive field HC in perpendicular exchange-biased [Pt/Co]3/MnIr multilayers by magneto-optical Kerr effect. As the thickness of the Pt layer increases, the perpendicular magnetic anisotropy constant Ku first increases and then reaches to saturation, which is resulted from the competition between perpendicular anisotropy and interfacial short-range interaction. The saturation damping constant α0 of the sample increases from about 0.062 to 0.122 when the Pt thickness increases from 0.5 nm to 1.5 nm. However, α0 increases with the decrease of Co thickness. We attributed both of these mainly to spin pumping effect.

AB - We studied the influence of Pt, Co and MnIr layer on the exchange bias field HE and coercive field HC in perpendicular exchange-biased [Pt/Co]3/MnIr multilayers by magneto-optical Kerr effect. As the thickness of the Pt layer increases, the perpendicular magnetic anisotropy constant Ku first increases and then reaches to saturation, which is resulted from the competition between perpendicular anisotropy and interfacial short-range interaction. The saturation damping constant α0 of the sample increases from about 0.062 to 0.122 when the Pt thickness increases from 0.5 nm to 1.5 nm. However, α0 increases with the decrease of Co thickness. We attributed both of these mainly to spin pumping effect.

KW - Damping

KW - Perpendicular exchange bias

KW - Ultrafast spin dynamics

UR - https://www.scopus.com/pages/publications/85066100896

U2 - 10.1016/j.jmmm.2019.165286

DO - 10.1016/j.jmmm.2019.165286

M3 - 文章

AN - SCOPUS:85066100896

SN - 0304-8853

VL - 487

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

M1 - 165286

ER -

Magnetic damping in perpendicular [Pt/Co]₃/MnIr multilayers

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Keywords

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