Side-Track Erasure Processes in Perpendicular Recording

Li, S.; Zhang, H.; Lu, P.; Zhu, W.; Edelman, H.; Rea, C.; Tabat, N.; Mao, S.; Brown, D.; Montemorra, M.; Palmer, D.

doi:10.1109/tmag.2006.883836

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…The second type of erasure reported in [156] occurs far away from the write pole itself [169][170][171][172]. This phenomenon has been named WATER (wide area track erasure) or STE (side-track erasure).…”

Section: A Problem 1: 'Media Relaxation'mentioning

confidence: 99%

The transition from longitudinal to perpendicular recording

Richter¹

2007

J. Phys. D: Appl. Phys.

255

164

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After more than 30 years of research, hard disk drives using perpendicular recording are finally commercially available. This review is a follow-up of a review written in 1999 and addresses the basic physics of perpendicular recording with special emphasis on the read and the write process and the magnetic aspects of the recording media. The paper also surveys various technical difficulties which prevented an earlier implementation of perpendicular recording. The paper closes with a short overview of alternative technologies that allow even higher storage densities.

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Section: A Problem 1: 'Media Relaxation'mentioning

confidence: 99%

The transition from longitudinal to perpendicular recording

Richter¹

2007

J. Phys. D: Appl. Phys.

255

164

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“…3) Far-Track Erasure: Far track erasure has previously been reported on single pole heads with a return shield and on a trailing shielded write head [8]. In both cases, the erasure locations can be up to several micrometers away from the MP, which are associated with the shields.…”

Section: ) Ss Corner/edge Erasurementioning

confidence: 99%

“…On the other hand, far-track erasure in the presence of SS is usually caused by the domain wall activities in the shields, which could result from any structural, Manuscript geometrical, and materials property mismatches, defects or imperfections. In this case, the root cause of the far-track erasure could be similar to the side track erasure for a non-SS writer [8], yet the SS added additional complexity to the head structure and to the fabrication processes, which in turn could cause SS-unique far-track erasure problem.…”

Section: Introductionmentioning

confidence: 99%

High Density Perpendicular Recording With Wrap-Around Shielded Writer

Bai¹,

Wu²,

Dovek³

et al. 2010

IEEE Trans. Magn.

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Wrap-around shielded writers combining both trailing shield and side shield have been studied both by modeling and by experiments. WAS design is demonstrated to have superior performance over its predecessor trailing shielded writer in perpendicular magnetic recording systems. While maintaining the down-track performance, the side shield significantly reduces the side fringing field, thus enabling high track densities. In this paper, various aspects of WAS design are investigated. Issues unique to side shielded design such as near and far track erasure are also discussed in detail. An outlook of future PMR writer and recording systems design is presented at the end.Index Terms-Adjacent track erasure, far track erasure, perpendicular recording, side shield, wrap-around shield.

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Micromagnetics of side shielded perpendicular magnetic recording heads

Takano

Liu

et al. 2011

Physics Procedia

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Side-Track Erasure Processes in Perpendicular Recording

Cited by 8 publications

References 7 publications

The transition from longitudinal to perpendicular recording

The transition from longitudinal to perpendicular recording

High Density Perpendicular Recording With Wrap-Around Shielded Writer

Micromagnetics of side shielded perpendicular magnetic recording heads

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