Direct observation of dendritic domain growth in perpendicular magnetic anisotropy CoFe/Pt multilayers

Hao Liang Liu; Wei He; Hai Feng Du; Qiong Wu; Ya Peng Fang; Yun Zhu; Jian Wang Cai; Zhao Hua Cheng

doi:10.1016/j.jmmm.2011.04.001

Direct observation of dendritic domain growth in perpendicular magnetic anisotropy CoFe/Pt multilayers

Hao Liang Liu
, Wei He
, Hai Feng Du
, Qiong Wu
, Ya Peng Fang
, Yun Zhu
, Jian Wang Cai
, Zhao Hua Cheng^*

^*Corresponding author for this work

CAS - Institute of Physics
Tianjin Normal University

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

8 Scopus citations

Abstract

We present the experimental results on thermally activated magnetization reversal for [Co_0.9Fe_0.1(5.0 Å)/Pt(20 Å)] ₄ multilayer. Direct domain observations show that magnetization reversal is initiated with rare nucleation and followed by dendritic growth of domain walls. Based on macroscopic magnetic parameters from experimental data, the dendritic domain growth mode is qualitatively interpreted by Monte Carlo simulations in terms of a simple uniaxial magnetic anisotropy model. Moreover, both time evolution of domain growth observation and magnetic relaxation measurements reveal that CoFe/Pt multilayer has a relatively large activation volume compared with Co/Pt multilayers.

Original language	English
Pages (from-to)	2238-2242
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	323
Issue number	17
DOIs	https://doi.org/10.1016/j.jmmm.2011.04.001
State	Published - Sep 2011
Externally published	Yes

Keywords

Activation volume
CoFe/Pt multilayer
Dendritic domain
Magnetic after effect

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10.1016/j.jmmm.2011.04.001

Cite this

@article{94e490c3052045aa8f226ca245682da6,

title = "Direct observation of dendritic domain growth in perpendicular magnetic anisotropy CoFe/Pt multilayers",

abstract = "We present the experimental results on thermally activated magnetization reversal for [Co0.9Fe0.1(5.0 {\AA})/Pt(20 {\AA})] 4 multilayer. Direct domain observations show that magnetization reversal is initiated with rare nucleation and followed by dendritic growth of domain walls. Based on macroscopic magnetic parameters from experimental data, the dendritic domain growth mode is qualitatively interpreted by Monte Carlo simulations in terms of a simple uniaxial magnetic anisotropy model. Moreover, both time evolution of domain growth observation and magnetic relaxation measurements reveal that CoFe/Pt multilayer has a relatively large activation volume compared with Co/Pt multilayers.",

keywords = "Activation volume, CoFe/Pt multilayer, Dendritic domain, Magnetic after effect",

author = "Liu, \{Hao Liang\} and Wei He and Du, \{Hai Feng\} and Qiong Wu and Fang, \{Ya Peng\} and Yun Zhu and Cai, \{Jian Wang\} and Cheng, \{Zhao Hua\}",

year = "2011",

month = sep,

doi = "10.1016/j.jmmm.2011.04.001",

language = "英语",

volume = "323",

pages = "2238--2242",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

number = "17",

}

TY - JOUR

T1 - Direct observation of dendritic domain growth in perpendicular magnetic anisotropy CoFe/Pt multilayers

AU - Liu, Hao Liang

AU - He, Wei

AU - Du, Hai Feng

AU - Wu, Qiong

AU - Fang, Ya Peng

AU - Zhu, Yun

AU - Cai, Jian Wang

AU - Cheng, Zhao Hua

PY - 2011/9

Y1 - 2011/9

N2 - We present the experimental results on thermally activated magnetization reversal for [Co0.9Fe0.1(5.0 Å)/Pt(20 Å)] 4 multilayer. Direct domain observations show that magnetization reversal is initiated with rare nucleation and followed by dendritic growth of domain walls. Based on macroscopic magnetic parameters from experimental data, the dendritic domain growth mode is qualitatively interpreted by Monte Carlo simulations in terms of a simple uniaxial magnetic anisotropy model. Moreover, both time evolution of domain growth observation and magnetic relaxation measurements reveal that CoFe/Pt multilayer has a relatively large activation volume compared with Co/Pt multilayers.

AB - We present the experimental results on thermally activated magnetization reversal for [Co0.9Fe0.1(5.0 Å)/Pt(20 Å)] 4 multilayer. Direct domain observations show that magnetization reversal is initiated with rare nucleation and followed by dendritic growth of domain walls. Based on macroscopic magnetic parameters from experimental data, the dendritic domain growth mode is qualitatively interpreted by Monte Carlo simulations in terms of a simple uniaxial magnetic anisotropy model. Moreover, both time evolution of domain growth observation and magnetic relaxation measurements reveal that CoFe/Pt multilayer has a relatively large activation volume compared with Co/Pt multilayers.

KW - Activation volume

KW - CoFe/Pt multilayer

KW - Dendritic domain

KW - Magnetic after effect

UR - https://www.scopus.com/pages/publications/79957528701

U2 - 10.1016/j.jmmm.2011.04.001

DO - 10.1016/j.jmmm.2011.04.001

M3 - 文章

AN - SCOPUS:79957528701

SN - 0304-8853

VL - 323

SP - 2238

EP - 2242

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 17

ER -

Direct observation of dendritic domain growth in perpendicular magnetic anisotropy CoFe/Pt multilayers

Abstract

Keywords

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