Effect of perpendicular magnetic recording media nucleation field on thermal stability

Zhupei Shi; Kai Tang; Jizhong He; Jane Zhang; Shanlin Duan

doi:10.1063/1.3073658

Effect of perpendicular magnetic recording media nucleation field on thermal stability

Zhupei Shi^*, Kai Tang, Jizhong He, Jane Zhang, Shanlin Duan

^*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

We developed a new component level thermal decay test that directly measures decays in media signal and noise, which are combined to obtain signal-to-noise ratio (SNR) decay. The SNR decay on spin stand is in good agreement with the hard disk drive bit error rate decay data. The effect of recording linear density (KFCI) on the SNR decay is studied, which is mainly attributed to the demagnetization field change with the recording density. Applying this test to a group of media with a broad range of nucleation field (Hn), it is found that the SNR decay correlates better with the Hn than with the thermal stability factor (KuV/ kB T). For a perpendicular magnetic recording media with Hn∼-2000 Oe exhibits zero SNR decay, it indicates strong robustness thermal stability.

Original language	English
Article number	07B720
Journal	Journal of Applied Physics
Volume	105
Issue number	7
DOIs	https://doi.org/10.1063/1.3073658
Publication status	Published - 2009
Externally published	Yes

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10.1063/1.3073658

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title = "Effect of perpendicular magnetic recording media nucleation field on thermal stability",

abstract = "We developed a new component level thermal decay test that directly measures decays in media signal and noise, which are combined to obtain signal-to-noise ratio (SNR) decay. The SNR decay on spin stand is in good agreement with the hard disk drive bit error rate decay data. The effect of recording linear density (KFCI) on the SNR decay is studied, which is mainly attributed to the demagnetization field change with the recording density. Applying this test to a group of media with a broad range of nucleation field (Hn), it is found that the SNR decay correlates better with the Hn than with the thermal stability factor (KuV/ kB T). For a perpendicular magnetic recording media with Hn∼-2000 Oe exhibits zero SNR decay, it indicates strong robustness thermal stability.",

author = "Zhupei Shi and Kai Tang and Jizhong He and Jane Zhang and Shanlin Duan",

year = "2009",

doi = "10.1063/1.3073658",

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journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Effect of perpendicular magnetic recording media nucleation field on thermal stability

AU - Shi, Zhupei

AU - Tang, Kai

AU - He, Jizhong

AU - Zhang, Jane

AU - Duan, Shanlin

PY - 2009

Y1 - 2009

N2 - We developed a new component level thermal decay test that directly measures decays in media signal and noise, which are combined to obtain signal-to-noise ratio (SNR) decay. The SNR decay on spin stand is in good agreement with the hard disk drive bit error rate decay data. The effect of recording linear density (KFCI) on the SNR decay is studied, which is mainly attributed to the demagnetization field change with the recording density. Applying this test to a group of media with a broad range of nucleation field (Hn), it is found that the SNR decay correlates better with the Hn than with the thermal stability factor (KuV/ kB T). For a perpendicular magnetic recording media with Hn∼-2000 Oe exhibits zero SNR decay, it indicates strong robustness thermal stability.

AB - We developed a new component level thermal decay test that directly measures decays in media signal and noise, which are combined to obtain signal-to-noise ratio (SNR) decay. The SNR decay on spin stand is in good agreement with the hard disk drive bit error rate decay data. The effect of recording linear density (KFCI) on the SNR decay is studied, which is mainly attributed to the demagnetization field change with the recording density. Applying this test to a group of media with a broad range of nucleation field (Hn), it is found that the SNR decay correlates better with the Hn than with the thermal stability factor (KuV/ kB T). For a perpendicular magnetic recording media with Hn∼-2000 Oe exhibits zero SNR decay, it indicates strong robustness thermal stability.

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000266633500354

UR - https://www.scopus.com/pages/publications/65249161026

U2 - 10.1063/1.3073658

DO - 10.1063/1.3073658

M3 - Journal Article

SN - 0021-8979

VL - 105

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 7

M1 - 07B720

ER -

Effect of perpendicular magnetic recording media nucleation field on thermal stability

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