Jitter reduction by using a continuous hard-magnetic layer for perpendicular recording media

Kenji Miura; Hiroaki Muraoka; Yoshiaki Sonobe; Yoshihisa Nakamura

doi:10.1109/TMAG.2002.802696

Jitter reduction by using a continuous hard-magnetic layer for perpendicular recording media

Kenji Miura^*, Hiroaki Muraoka, Yoshiaki Sonobe, Yoshihisa Nakamura

^*Corresponding author for this work

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

9 Citations (Scopus)

Abstract

Reduction of medium noise is crucial in perpendicular magnetic recording. The coupled granular and continuous (CGC) medium that has a layered continuous and granular film layer is a candidate for obtaining high SNR. We investigated noise characteristics of the CGC double-layered medium by focusing on transition jitter and magnetization transition analysis with an MFM. Results show that transition smoothing is considered to take place by depositing the continuons layer from analysis of waveform and MFM images. Transition jitter is redueed with CGC structure. And high thermal stability is simultaneously achieved.

Original language	English
Pages (from-to)	2054-2056
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	38
Issue number	5 I
DOIs	https://doi.org/10.1109/TMAG.2002.802696
Publication status	Published - 2002 Sept
Externally published	Yes
Event	2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands Duration: 2002 Apr 28 → 2002 May 2

Keywords

CGC medium
Cross-track correlation length
Medium noise
Multilayer
Perpendicular recording medium
Transition jitter

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2002.802696

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title = "Jitter reduction by using a continuous hard-magnetic layer for perpendicular recording media",

abstract = "Reduction of medium noise is crucial in perpendicular magnetic recording. The coupled granular and continuous (CGC) medium that has a layered continuous and granular film layer is a candidate for obtaining high SNR. We investigated noise characteristics of the CGC double-layered medium by focusing on transition jitter and magnetization transition analysis with an MFM. Results show that transition smoothing is considered to take place by depositing the continuons layer from analysis of waveform and MFM images. Transition jitter is redueed with CGC structure. And high thermal stability is simultaneously achieved.",

keywords = "CGC medium, Cross-track correlation length, Medium noise, Multilayer, Perpendicular recording medium, Transition jitter",

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

note = "Funding Information: Manuscript received February 11, 2002; revised May 12, 2002. This work was supported in part by the JSPS Program “Research for the Future” and the SRC. K. Miura, H. Muraoka, and Y. Nakamura are with the Research Institute of Electrical Communication, Tohoku University, Miyagi 980-8577, Japan (e-mail: kmiura@kiroku.riec.tohoku.ac.jp). Y. Sonobe is with IBM, Almaden Research Center, San Jose, CA 95120 USA (e-mail: sonobe@almaden.ibm.com). Digital Object Identifier 10.1109/TMAG.2002.802696.; 2002 International Magnetics Conference (Intermag 2002) ; Conference date: 28-04-2002 Through 02-05-2002",

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doi = "10.1109/TMAG.2002.802696",

language = "English",

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journal = "IEEE Transactions on Magnetics",

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T1 - Jitter reduction by using a continuous hard-magnetic layer for perpendicular recording media

AU - Miura, Kenji

AU - Muraoka, Hiroaki

AU - Sonobe, Yoshiaki

AU - Nakamura, Yoshihisa

N1 - Funding Information: Manuscript received February 11, 2002; revised May 12, 2002. This work was supported in part by the JSPS Program “Research for the Future” and the SRC. K. Miura, H. Muraoka, and Y. Nakamura are with the Research Institute of Electrical Communication, Tohoku University, Miyagi 980-8577, Japan (e-mail: kmiura@kiroku.riec.tohoku.ac.jp). Y. Sonobe is with IBM, Almaden Research Center, San Jose, CA 95120 USA (e-mail: sonobe@almaden.ibm.com). Digital Object Identifier 10.1109/TMAG.2002.802696.

PY - 2002/9

Y1 - 2002/9

N2 - Reduction of medium noise is crucial in perpendicular magnetic recording. The coupled granular and continuous (CGC) medium that has a layered continuous and granular film layer is a candidate for obtaining high SNR. We investigated noise characteristics of the CGC double-layered medium by focusing on transition jitter and magnetization transition analysis with an MFM. Results show that transition smoothing is considered to take place by depositing the continuons layer from analysis of waveform and MFM images. Transition jitter is redueed with CGC structure. And high thermal stability is simultaneously achieved.

AB - Reduction of medium noise is crucial in perpendicular magnetic recording. The coupled granular and continuous (CGC) medium that has a layered continuous and granular film layer is a candidate for obtaining high SNR. We investigated noise characteristics of the CGC double-layered medium by focusing on transition jitter and magnetization transition analysis with an MFM. Results show that transition smoothing is considered to take place by depositing the continuons layer from analysis of waveform and MFM images. Transition jitter is redueed with CGC structure. And high thermal stability is simultaneously achieved.

KW - CGC medium

KW - Cross-track correlation length

KW - Medium noise

KW - Multilayer

KW - Perpendicular recording medium

KW - Transition jitter

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DO - 10.1109/TMAG.2002.802696

M3 - Conference article

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SN - 0018-9464

VL - 38

SP - 2054

EP - 2056

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 5 I

T2 - 2002 International Magnetics Conference (Intermag 2002)

Y2 - 28 April 2002 through 2 May 2002

ER -

Jitter reduction by using a continuous hard-magnetic layer for perpendicular recording media

Abstract

Keywords

ASJC Scopus subject areas

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