Head design scheme for perpendicular recording with single layered media

E. Kim; Y. H. Im; Y. Kim; K. J. Lee; K. Lee; N. Y. Park

doi:10.1109/20.950848

Head design scheme for perpendicular recording with single layered media

E. Kim, Y. H. Im, Y. Kim, K. J. Lee, K. Lee, N. Y. Park

Research output: Contribution to journal › Conference article › peer-review

8 Citations (Scopus)

Abstract

For ultra high areal recording density, we suggest the perpendicular recording scheme with ring head and single layered media for easy implementation. To improve the perpendicular head field and its gradient, conventional ring head is modified by cutting the top pole edge. Head field was calculated with nonlinear finite element method. The write process was simulated with micromagnetics using the calculated head field of two heads (original and modified) at each magnetic grain of recording disk, instead of using Karlqvist head field. Both simulated and measured MFM images show that the transition of modified head is clearer than original one. Also, TAA and SNR of modified head are higher than results of original head. With simple modification, currently used ring head can be easily applied to high density perpendicular recording HDD system.

Original language	English
Pages (from-to)	1382-1385
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	37
Issue number	4 I
DOIs	https://doi.org/10.1109/20.950848
Publication status	Published - 2001 Jul
Externally published	Yes
Event	8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States Duration: 2001 Jan 7 → 2001 Jan 11

Keywords

Head design
Micromagnetics
Perpendicular magnetic recording
Ring head

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.950848

Cite this

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title = "Head design scheme for perpendicular recording with single layered media",

abstract = "For ultra high areal recording density, we suggest the perpendicular recording scheme with ring head and single layered media for easy implementation. To improve the perpendicular head field and its gradient, conventional ring head is modified by cutting the top pole edge. Head field was calculated with nonlinear finite element method. The write process was simulated with micromagnetics using the calculated head field of two heads (original and modified) at each magnetic grain of recording disk, instead of using Karlqvist head field. Both simulated and measured MFM images show that the transition of modified head is clearer than original one. Also, TAA and SNR of modified head are higher than results of original head. With simple modification, currently used ring head can be easily applied to high density perpendicular recording HDD system.",

keywords = "Head design, Micromagnetics, Perpendicular magnetic recording, Ring head",

author = "E. Kim and Im, {Y. H.} and Y. Kim and Lee, {K. J.} and K. Lee and Park, {N. Y.}",

note = "Copyright: Copyright 2008 Elsevier B.V., All rights reserved.; 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) ; Conference date: 07-01-2001 Through 11-01-2001",

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T1 - Head design scheme for perpendicular recording with single layered media

AU - Kim, E.

AU - Im, Y. H.

AU - Kim, Y.

AU - Lee, K. J.

AU - Lee, K.

AU - Park, N. Y.

PY - 2001/7

Y1 - 2001/7

N2 - For ultra high areal recording density, we suggest the perpendicular recording scheme with ring head and single layered media for easy implementation. To improve the perpendicular head field and its gradient, conventional ring head is modified by cutting the top pole edge. Head field was calculated with nonlinear finite element method. The write process was simulated with micromagnetics using the calculated head field of two heads (original and modified) at each magnetic grain of recording disk, instead of using Karlqvist head field. Both simulated and measured MFM images show that the transition of modified head is clearer than original one. Also, TAA and SNR of modified head are higher than results of original head. With simple modification, currently used ring head can be easily applied to high density perpendicular recording HDD system.

AB - For ultra high areal recording density, we suggest the perpendicular recording scheme with ring head and single layered media for easy implementation. To improve the perpendicular head field and its gradient, conventional ring head is modified by cutting the top pole edge. Head field was calculated with nonlinear finite element method. The write process was simulated with micromagnetics using the calculated head field of two heads (original and modified) at each magnetic grain of recording disk, instead of using Karlqvist head field. Both simulated and measured MFM images show that the transition of modified head is clearer than original one. Also, TAA and SNR of modified head are higher than results of original head. With simple modification, currently used ring head can be easily applied to high density perpendicular recording HDD system.

KW - Head design

KW - Micromagnetics

KW - Perpendicular magnetic recording

KW - Ring head

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Head design scheme for perpendicular recording with single layered media

Abstract

Keywords

ASJC Scopus subject areas

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