IEICE TRANSACTIONS on Electronics
Experimental Study of Nonlinear Transition Shift in Perpendicular Magnetic Recording with Single-Pole Head
Summary :
Nonlinear phenomena in perpendicular magnetic recording employing a single-pole head and a double-layered medium were investigated. First, measurement of linear superposition in the time domain indicated than the amount of nonlinear transition shift (NLTS) was less than 10 nm. It was concluded that the nonlinearity was caused by transition shift, not by waveform distortion. By interpreting the results, we proved that the NLTS was strongly related with head field gradient and interference field from recorded magnetization. Dependence on head parameter was examined by experiments. Based on the results, a single-pole head with which transition shift can be reduced was proposed. Pseudo-random sequence analysis revealed that NLTS was several percent even at 318 kFRPI, or at a bit interval of 80 nm, which agreed with the result of measurement of linear superposition in the time domain analysis. Experiments showed that NLTS increases the shortest bit length, in contrast with the case of longitudinal recording.
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- IEICE TRANSACTIONS on Electronics Vol.E80-C No.9 pp.1187-1193
- Publication Date
- 1997/09/25
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- Special Section PAPER (Special Issue on High Density Information Recording Technologies)
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Hiroaki MURAOKA, Yoshihisa NAKAMURA, "Experimental Study of Nonlinear Transition Shift in Perpendicular Magnetic Recording with Single-Pole Head" in IEICE TRANSACTIONS on Electronics,
vol. E80-C, no. 9, pp. 1187-1193, September 1997, doi: .
Abstract: Nonlinear phenomena in perpendicular magnetic recording employing a single-pole head and a double-layered medium were investigated. First, measurement of linear superposition in the time domain indicated than the amount of nonlinear transition shift (NLTS) was less than 10 nm. It was concluded that the nonlinearity was caused by transition shift, not by waveform distortion. By interpreting the results, we proved that the NLTS was strongly related with head field gradient and interference field from recorded magnetization. Dependence on head parameter was examined by experiments. Based on the results, a single-pole head with which transition shift can be reduced was proposed. Pseudo-random sequence analysis revealed that NLTS was several percent even at 318 kFRPI, or at a bit interval of 80 nm, which agreed with the result of measurement of linear superposition in the time domain analysis. Experiments showed that NLTS increases the shortest bit length, in contrast with the case of longitudinal recording.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e80-c_9_1187/_p
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@ARTICLE{e80-c_9_1187,
author={Hiroaki MURAOKA, Yoshihisa NAKAMURA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Experimental Study of Nonlinear Transition Shift in Perpendicular Magnetic Recording with Single-Pole Head},
year={1997},
volume={E80-C},
number={9},
pages={1187-1193},
abstract={Nonlinear phenomena in perpendicular magnetic recording employing a single-pole head and a double-layered medium were investigated. First, measurement of linear superposition in the time domain indicated than the amount of nonlinear transition shift (NLTS) was less than 10 nm. It was concluded that the nonlinearity was caused by transition shift, not by waveform distortion. By interpreting the results, we proved that the NLTS was strongly related with head field gradient and interference field from recorded magnetization. Dependence on head parameter was examined by experiments. Based on the results, a single-pole head with which transition shift can be reduced was proposed. Pseudo-random sequence analysis revealed that NLTS was several percent even at 318 kFRPI, or at a bit interval of 80 nm, which agreed with the result of measurement of linear superposition in the time domain analysis. Experiments showed that NLTS increases the shortest bit length, in contrast with the case of longitudinal recording.},
keywords={},
doi={},
ISSN={},
month={September},}
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TY - JOUR
TI - Experimental Study of Nonlinear Transition Shift in Perpendicular Magnetic Recording with Single-Pole Head
T2 - IEICE TRANSACTIONS on Electronics
SP - 1187
EP - 1193
AU - Hiroaki MURAOKA
AU - Yoshihisa NAKAMURA
PY - 1997
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E80-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 1997
AB - Nonlinear phenomena in perpendicular magnetic recording employing a single-pole head and a double-layered medium were investigated. First, measurement of linear superposition in the time domain indicated than the amount of nonlinear transition shift (NLTS) was less than 10 nm. It was concluded that the nonlinearity was caused by transition shift, not by waveform distortion. By interpreting the results, we proved that the NLTS was strongly related with head field gradient and interference field from recorded magnetization. Dependence on head parameter was examined by experiments. Based on the results, a single-pole head with which transition shift can be reduced was proposed. Pseudo-random sequence analysis revealed that NLTS was several percent even at 318 kFRPI, or at a bit interval of 80 nm, which agreed with the result of measurement of linear superposition in the time domain analysis. Experiments showed that NLTS increases the shortest bit length, in contrast with the case of longitudinal recording.
ER -
English
