Quantitative relationship between contact stress and magnetic signal strength in perpendicular recording media

Yuliang Liu; Shaomin Xiong; Jia Lou; David B. Bogy; Guangyu Zhang

doi:10.1063/1.4865880

Quantitative relationship between contact stress and magnetic signal strength in perpendicular recording media

Yuliang Liu^*
, Shaomin Xiong
, Jia Lou
, David B. Bogy
, Guangyu Zhang

^*Corresponding author for this work

School of Mechatronics Engineering, Harbin Institute of Technology
University of California at Berkeley
CAS - Changchun Institute of Optics Fine Mechanics and Physics

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

5 Scopus citations

Abstract

A series of nanoscratch experiments is conducted using constant loading scratch profiles to apply mechanical contact stress on perpendicular magnetic recording (PMR) media to cause its magnetic signal strength decay, which is characterized by the magnetic force microscope. The dependence of the magnetic signal strength on the applied normal load is quantitatively investigated. The results indicate that an increase of the applied normal load leads to a decrease of the magnetic signal strength. In addition, in order to obtain a more complete understanding of the results, a 3D finite element model is created to calculate the stress under different normal loads. Finally, the quantitative relationship between residual shear stress and magnetic signal strength is identified.

Original language	English
Article number	17B725
Journal	Journal of Applied Physics
Volume	115
Issue number	17
DOIs	https://doi.org/10.1063/1.4865880
State	Published - 7 May 2014
Externally published	Yes

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10.1063/1.4865880

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title = "Quantitative relationship between contact stress and magnetic signal strength in perpendicular recording media",

abstract = "A series of nanoscratch experiments is conducted using constant loading scratch profiles to apply mechanical contact stress on perpendicular magnetic recording (PMR) media to cause its magnetic signal strength decay, which is characterized by the magnetic force microscope. The dependence of the magnetic signal strength on the applied normal load is quantitatively investigated. The results indicate that an increase of the applied normal load leads to a decrease of the magnetic signal strength. In addition, in order to obtain a more complete understanding of the results, a 3D finite element model is created to calculate the stress under different normal loads. Finally, the quantitative relationship between residual shear stress and magnetic signal strength is identified.",

author = "Yuliang Liu and Shaomin Xiong and Jia Lou and Bogy, \{David B.\} and Guangyu Zhang",

year = "2014",

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day = "7",

doi = "10.1063/1.4865880",

language = "英语",

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journal = "Journal of Applied Physics",

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T1 - Quantitative relationship between contact stress and magnetic signal strength in perpendicular recording media

AU - Liu, Yuliang

AU - Xiong, Shaomin

AU - Lou, Jia

AU - Bogy, David B.

AU - Zhang, Guangyu

PY - 2014/5/7

Y1 - 2014/5/7

N2 - A series of nanoscratch experiments is conducted using constant loading scratch profiles to apply mechanical contact stress on perpendicular magnetic recording (PMR) media to cause its magnetic signal strength decay, which is characterized by the magnetic force microscope. The dependence of the magnetic signal strength on the applied normal load is quantitatively investigated. The results indicate that an increase of the applied normal load leads to a decrease of the magnetic signal strength. In addition, in order to obtain a more complete understanding of the results, a 3D finite element model is created to calculate the stress under different normal loads. Finally, the quantitative relationship between residual shear stress and magnetic signal strength is identified.

AB - A series of nanoscratch experiments is conducted using constant loading scratch profiles to apply mechanical contact stress on perpendicular magnetic recording (PMR) media to cause its magnetic signal strength decay, which is characterized by the magnetic force microscope. The dependence of the magnetic signal strength on the applied normal load is quantitatively investigated. The results indicate that an increase of the applied normal load leads to a decrease of the magnetic signal strength. In addition, in order to obtain a more complete understanding of the results, a 3D finite element model is created to calculate the stress under different normal loads. Finally, the quantitative relationship between residual shear stress and magnetic signal strength is identified.

UR - https://www.scopus.com/pages/publications/84903893547

U2 - 10.1063/1.4865880

DO - 10.1063/1.4865880

M3 - 文章

AN - SCOPUS:84903893547

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VL - 115

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 17

M1 - 17B725

ER -

Quantitative relationship between contact stress and magnetic signal strength in perpendicular recording media

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