Effect of head field gradient on transition jitter in perpendicular magnetic recording

Kenji Miura; Hiroaki Muraoka; Yoshihisa Nakamura

doi:10.1109/20.951010

Effect of head field gradient on transition jitter in perpendicular magnetic recording

Kenji Miura, Hiroaki Muraoka, Yoshihisa Nakamura

Broadband Engineering Division

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

32 Citations (Scopus)

Abstract

Noise of perpendicular double-layered media was investigated in connection with write head field of single pole heads. Time-domain noise measurement revealed that the noise was spatially concentrated around transitions, caused by transition jitter. The influence of writing head field was discussed based on jitter measurement using various heads; a ring head and single pole heads. The amount of transition jitter was inversely proportional to estimated writing head field gradient. The writing head field improvement, thus, contributed to reduce the medium noise.

Original language	English
Pages (from-to)	1926-1928
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	37
Issue number	4 I
DOIs	https://doi.org/10.1109/20.951010
Publication status	Published - 2001 Jul
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 field gradient
Medium noise
Perpendicular magnetic recording
Transition jitter

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.951010

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title = "Effect of head field gradient on transition jitter in perpendicular magnetic recording",

abstract = "Noise of perpendicular double-layered media was investigated in connection with write head field of single pole heads. Time-domain noise measurement revealed that the noise was spatially concentrated around transitions, caused by transition jitter. The influence of writing head field was discussed based on jitter measurement using various heads; a ring head and single pole heads. The amount of transition jitter was inversely proportional to estimated writing head field gradient. The writing head field improvement, thus, contributed to reduce the medium noise.",

keywords = "Head field gradient, Medium noise, Perpendicular magnetic recording, Transition jitter",

author = "Kenji Miura and Hiroaki Muraoka and Yoshihisa Nakamura",

note = "Funding Information: Manuscript received October 11, 2000. This work was supported in part by the JSPS program of “Research for the Future,” Japanese government under Grant-in-Aid for Scientific Research, NEDO/ASET and SRC. K. Miura is with RIEC, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8577 Japan (e-mail: kmiura@kiroku.riec.tohoku.ac.jp). H. Muraoka and Y. Nakamura are with RIEC, Tohoku, University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577 Japan. Publisher Item Identifier S 0018-9464(01)05926-X.; 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) ; Conference date: 07-01-2001 Through 11-01-2001",

year = "2001",

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doi = "10.1109/20.951010",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

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TY - JOUR

T1 - Effect of head field gradient on transition jitter in perpendicular magnetic recording

AU - Miura, Kenji

AU - Muraoka, Hiroaki

AU - Nakamura, Yoshihisa

N1 - Funding Information: Manuscript received October 11, 2000. This work was supported in part by the JSPS program of “Research for the Future,” Japanese government under Grant-in-Aid for Scientific Research, NEDO/ASET and SRC. K. Miura is with RIEC, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8577 Japan (e-mail: kmiura@kiroku.riec.tohoku.ac.jp). H. Muraoka and Y. Nakamura are with RIEC, Tohoku, University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577 Japan. Publisher Item Identifier S 0018-9464(01)05926-X.

PY - 2001/7

Y1 - 2001/7

N2 - Noise of perpendicular double-layered media was investigated in connection with write head field of single pole heads. Time-domain noise measurement revealed that the noise was spatially concentrated around transitions, caused by transition jitter. The influence of writing head field was discussed based on jitter measurement using various heads; a ring head and single pole heads. The amount of transition jitter was inversely proportional to estimated writing head field gradient. The writing head field improvement, thus, contributed to reduce the medium noise.

AB - Noise of perpendicular double-layered media was investigated in connection with write head field of single pole heads. Time-domain noise measurement revealed that the noise was spatially concentrated around transitions, caused by transition jitter. The influence of writing head field was discussed based on jitter measurement using various heads; a ring head and single pole heads. The amount of transition jitter was inversely proportional to estimated writing head field gradient. The writing head field improvement, thus, contributed to reduce the medium noise.

KW - Head field gradient

KW - Medium noise

KW - Perpendicular magnetic recording

KW - Transition jitter

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JF - IEEE Transactions on Magnetics

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Y2 - 7 January 2001 through 11 January 2001

ER -

Effect of head field gradient on transition jitter in perpendicular magnetic recording

Abstract

Keywords

ASJC Scopus subject areas

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