Optimization of Precompensation for NLTS in Perpendicular Magnetic Recording

Kenji Miura; Kenta Seki; Mitsuhiro Hashimoto; Hiroaki Muraoka; Hajime Aoi; Yoshihisa Nakamura

doi:10.1109/TMAG.2006.879574

Optimization of Precompensation for NLTS in Perpendicular Magnetic Recording

Kenji Miura, Kenta Seki, Mitsuhiro Hashimoto, Hiroaki Muraoka, Hajime Aoi, Yoshihisa Nakamura

Broadband Engineering Division

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

5 Citations (Scopus)

Abstract

Nonlinear transition shift (NLTS) and nonlinear amplitude distortion (NLAD) in perpendicular magnetic recording were investigated for CoPtCr-Si0₂ media with various Si0₂ contents that have various inter-granular exchange coupling. The tighter inter-granular coupling increases both NLTS and NLAD. The NLTS and NLAD were discriminated and extracted NLTS showed that perpendicular media exhibited the opposite shift to longitudinal media as theoretically expected. Careful precompensation optimization is required to obtain a good error-rate performance at high-linear densities.

Original language	English
Pages (from-to)	2297-2299
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	42
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2006.879574
Publication status	Published - 2006 Oct

Keywords

Nonlinear amplitude distortion (NLAD)
nonlinear transition shift (NLTS)
partial erasure
perpendicular magnetic recording
precompensation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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title = "Optimization of Precompensation for NLTS in Perpendicular Magnetic Recording",

abstract = "Nonlinear transition shift (NLTS) and nonlinear amplitude distortion (NLAD) in perpendicular magnetic recording were investigated for CoPtCr-Si02 media with various Si02 contents that have various inter-granular exchange coupling. The tighter inter-granular coupling increases both NLTS and NLAD. The NLTS and NLAD were discriminated and extracted NLTS showed that perpendicular media exhibited the opposite shift to longitudinal media as theoretically expected. Careful precompensation optimization is required to obtain a good error-rate performance at high-linear densities.",

keywords = "Nonlinear amplitude distortion (NLAD), nonlinear transition shift (NLTS), partial erasure, perpendicular magnetic recording, precompensation",

author = "Kenji Miura and Kenta Seki and Mitsuhiro Hashimoto and Hiroaki Muraoka and Hajime Aoi and Yoshihisa Nakamura",

year = "2006",

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T1 - Optimization of Precompensation for NLTS in Perpendicular Magnetic Recording

AU - Miura, Kenji

AU - Seki, Kenta

AU - Hashimoto, Mitsuhiro

AU - Muraoka, Hiroaki

AU - Aoi, Hajime

AU - Nakamura, Yoshihisa

PY - 2006/10

Y1 - 2006/10

N2 - Nonlinear transition shift (NLTS) and nonlinear amplitude distortion (NLAD) in perpendicular magnetic recording were investigated for CoPtCr-Si02 media with various Si02 contents that have various inter-granular exchange coupling. The tighter inter-granular coupling increases both NLTS and NLAD. The NLTS and NLAD were discriminated and extracted NLTS showed that perpendicular media exhibited the opposite shift to longitudinal media as theoretically expected. Careful precompensation optimization is required to obtain a good error-rate performance at high-linear densities.

AB - Nonlinear transition shift (NLTS) and nonlinear amplitude distortion (NLAD) in perpendicular magnetic recording were investigated for CoPtCr-Si02 media with various Si02 contents that have various inter-granular exchange coupling. The tighter inter-granular coupling increases both NLTS and NLAD. The NLTS and NLAD were discriminated and extracted NLTS showed that perpendicular media exhibited the opposite shift to longitudinal media as theoretically expected. Careful precompensation optimization is required to obtain a good error-rate performance at high-linear densities.

KW - Nonlinear amplitude distortion (NLAD)

KW - nonlinear transition shift (NLTS)

KW - partial erasure

KW - perpendicular magnetic recording

KW - precompensation

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