Skew Angle Effects on Disk Recording Performance at High Recording Densities

Dan WEI

Skew Angle Effects on Disk Recording Performance at High Recording Densities

Dan WEI

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Skew angle effects on the transition noise are analyzed in the longitudinal disk media by micromagnetic simulations at area densities from 14.3 Gb/in² to 31.5 Gb/in². The transition noise, including the peak, width and jitter noise, is the dominant noise in ultra-high density disk recording systems. An isotropic medium and an oriented medium, with a fixed grain size of 135 and a coercivity of 2900 Oe, are chosen for the noise analysis. The peak noise is studied by the distribution of the peak magnetization amplitude M_p in each bit. The transition a-parameter is no longer the value as given in the William-Comstock approximation. It is found that the transition noise is highly dependent on both the linear den sity and the skew angle, where the bit length and the grain size are on the same order. In both media, the medium noise increases severely when the skew angle is above 10 degrees.

Publication: IEICE TRANSACTIONS on Electronics Vol.E84-C No.9 pp.1171-1175

Publication Date: 2001/09/01

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Type of Manuscript: Special Section PAPER (Special Issue on Selected Papers from the 5th Asian Symposium on Information Storage Technology)

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Dan WEI, "Skew Angle Effects on Disk Recording Performance at High Recording Densities" in IEICE TRANSACTIONS on Electronics, vol. E84-C, no. 9, pp. 1171-1175, September 2001, doi: .
Abstract: Skew angle effects on the transition noise are analyzed in the longitudinal disk media by micromagnetic simulations at area densities from 14.3 Gb/in² to 31.5 Gb/in². The transition noise, including the peak, width and jitter noise, is the dominant noise in ultra-high density disk recording systems. An isotropic medium and an oriented medium, with a fixed grain size of 135 and a coercivity of 2900 Oe, are chosen for the noise analysis. The peak noise is studied by the distribution of the peak magnetization amplitude M_p in each bit. The transition a-parameter is no longer the value as given in the William-Comstock approximation. It is found that the transition noise is highly dependent on both the linear den sity and the skew angle, where the bit length and the grain size are on the same order. In both media, the medium noise increases severely when the skew angle is above 10 degrees.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e84-c_9_1171/_p

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@ARTICLE{e84-c_9_1171,
author={Dan WEI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Skew Angle Effects on Disk Recording Performance at High Recording Densities},
year={2001},
volume={E84-C},
number={9},
pages={1171-1175},
abstract={Skew angle effects on the transition noise are analyzed in the longitudinal disk media by micromagnetic simulations at area densities from 14.3 Gb/in² to 31.5 Gb/in². The transition noise, including the peak, width and jitter noise, is the dominant noise in ultra-high density disk recording systems. An isotropic medium and an oriented medium, with a fixed grain size of 135 and a coercivity of 2900 Oe, are chosen for the noise analysis. The peak noise is studied by the distribution of the peak magnetization amplitude M_p in each bit. The transition a-parameter is no longer the value as given in the William-Comstock approximation. It is found that the transition noise is highly dependent on both the linear den sity and the skew angle, where the bit length and the grain size are on the same order. In both media, the medium noise increases severely when the skew angle is above 10 degrees.},
keywords={},
doi={},
ISSN={},
month={September},}

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TY - JOUR
TI - Skew Angle Effects on Disk Recording Performance at High Recording Densities
T2 - IEICE TRANSACTIONS on Electronics
SP - 1171
EP - 1175
AU - Dan WEI
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E84-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 2001
AB - Skew angle effects on the transition noise are analyzed in the longitudinal disk media by micromagnetic simulations at area densities from 14.3 Gb/in² to 31.5 Gb/in². The transition noise, including the peak, width and jitter noise, is the dominant noise in ultra-high density disk recording systems. An isotropic medium and an oriented medium, with a fixed grain size of 135 and a coercivity of 2900 Oe, are chosen for the noise analysis. The peak noise is studied by the distribution of the peak magnetization amplitude M_p in each bit. The transition a-parameter is no longer the value as given in the William-Comstock approximation. It is found that the transition noise is highly dependent on both the linear den sity and the skew angle, where the bit length and the grain size are on the same order. In both media, the medium noise increases severely when the skew angle is above 10 degrees.
ER -