Micromagnetic study of medium noise plateau

Yan Dong; R. H. Victora

doi:10.1109/TMAG.2009.2025258

Micromagnetic study of medium noise plateau

Yan Dong
, R. H. Victora

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Medium noise characteristics and transition jitter in perpendicular magnetic recording are explored using micromagnetic simulation. A noise plateau for intermediate recording densities is observed for a recording layer of typical magnetization. The plateau is replaced by a normal linear dependence of noise on recording density for a low magnetization recording layer. We show analytically that a source of the plateau is similar to that producing the non-linear transition shift of signal. In particular, magnetostatic effects are predicted to produce positive correlation of jitter and thus negative correlation of noise at the densities associated with the plateau.

Original language	English (US)
Article number	5257220
Pages (from-to)	3714-3717
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	45
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2009.2025258
State	Published - Oct 2009

Bibliographical note

Funding Information:
The authors thank T. Arnoldussen for experimental data and several valuable discussions. They also thank Seagate Technology for funding this work.

Keywords

Demagnetizing field
Micromagnetic simulation
Non-linear transition shift
Perpendicular media
Position jitter

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10.1109/TMAG.2009.2025258

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title = "Micromagnetic study of medium noise plateau",

abstract = "Medium noise characteristics and transition jitter in perpendicular magnetic recording are explored using micromagnetic simulation. A noise plateau for intermediate recording densities is observed for a recording layer of typical magnetization. The plateau is replaced by a normal linear dependence of noise on recording density for a low magnetization recording layer. We show analytically that a source of the plateau is similar to that producing the non-linear transition shift of signal. In particular, magnetostatic effects are predicted to produce positive correlation of jitter and thus negative correlation of noise at the densities associated with the plateau.",

keywords = "Demagnetizing field, Micromagnetic simulation, Non-linear transition shift, Perpendicular media, Position jitter",

author = "Yan Dong and Victora, \{R. H.\}",

note = "Funding Information: The authors thank T. Arnoldussen for experimental data and several valuable discussions. They also thank Seagate Technology for funding this work.",

year = "2009",

month = oct,

doi = "10.1109/TMAG.2009.2025258",

language = "English (US)",

volume = "45",

pages = "3714--3717",

journal = "IEEE Transactions on Magnetics",

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T1 - Micromagnetic study of medium noise plateau

AU - Dong, Yan

AU - Victora, R. H.

N1 - Funding Information: The authors thank T. Arnoldussen for experimental data and several valuable discussions. They also thank Seagate Technology for funding this work.

PY - 2009/10

Y1 - 2009/10

N2 - Medium noise characteristics and transition jitter in perpendicular magnetic recording are explored using micromagnetic simulation. A noise plateau for intermediate recording densities is observed for a recording layer of typical magnetization. The plateau is replaced by a normal linear dependence of noise on recording density for a low magnetization recording layer. We show analytically that a source of the plateau is similar to that producing the non-linear transition shift of signal. In particular, magnetostatic effects are predicted to produce positive correlation of jitter and thus negative correlation of noise at the densities associated with the plateau.

AB - Medium noise characteristics and transition jitter in perpendicular magnetic recording are explored using micromagnetic simulation. A noise plateau for intermediate recording densities is observed for a recording layer of typical magnetization. The plateau is replaced by a normal linear dependence of noise on recording density for a low magnetization recording layer. We show analytically that a source of the plateau is similar to that producing the non-linear transition shift of signal. In particular, magnetostatic effects are predicted to produce positive correlation of jitter and thus negative correlation of noise at the densities associated with the plateau.

KW - Demagnetizing field

KW - Micromagnetic simulation

KW - Non-linear transition shift

KW - Perpendicular media

KW - Position jitter

UR - https://www.scopus.com/pages/publications/70350600801

UR - https://www.scopus.com/pages/publications/70350600801#tab=citedBy

U2 - 10.1109/TMAG.2009.2025258

DO - 10.1109/TMAG.2009.2025258

M3 - Article

AN - SCOPUS:70350600801

SN - 0018-9464

VL - 45

SP - 3714

EP - 3717

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 10

M1 - 5257220

ER -

Micromagnetic study of medium noise plateau

Abstract

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