Areal density limits for perpendicular magnetic recording

R. H. Victora; Jianhua Xue; Mohammed Patwari

doi:10.1109/TMAG.2002.802791

Areal density limits for perpendicular magnetic recording

R. H. Victora, Jianhua Xue, Mohammed Patwari

Electrical and Computer Engineering

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

85 Scopus citations

Abstract

A strategy for high-density perpendicular magnetic recording with a soft underlayer is introduced. The approach is based on three concepts: 1) the nonzero magnetic susceptibility of the recording layer; 2) the use of intergranular exchange to partially cancel magnetostatic effects; and 3) a novel head architecture. Micromagnetic simulations involving recording head, soft underlayer, and recording layer are employed to specify a particularly advantageous design. It is shown that the expected density approaches 1 Tbit/in².

Original language	English (US)
Pages (from-to)	1886-1891
Number of pages	6
Journal	IEEE Transactions on Magnetics
Volume	38
Issue number	5 I
DOIs	https://doi.org/10.1109/TMAG.2002.802791
State	Published - Sep 2002
Event	2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands Duration: Apr 28 2002 → May 2 2002

Bibliographical note

Funding Information:
Manuscript received February 14, 2002. This work was supported in part by Seagate, Singapore, the National Storage Industry Consortium, and the National Science Foundation under Contract DMR-9971573. The authors are with the Department of Electrical and Computer Engineering, Center for Micromagnetics and Information Technologies, University of Minnesota, Minneapolis, MN 55455 USA (e-mail: [email protected]). Digital Object Identifier 10.1109/TMAG.2002.802791.

Keywords

High-density perpendicular recording
Intergranular exchange
Micromagnetics
Permeability

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10.1109/TMAG.2002.802791

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abstract = "A strategy for high-density perpendicular magnetic recording with a soft underlayer is introduced. The approach is based on three concepts: 1) the nonzero magnetic susceptibility of the recording layer; 2) the use of intergranular exchange to partially cancel magnetostatic effects; and 3) a novel head architecture. Micromagnetic simulations involving recording head, soft underlayer, and recording layer are employed to specify a particularly advantageous design. It is shown that the expected density approaches 1 Tbit/in2.",

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AU - Xue, Jianhua

AU - Patwari, Mohammed

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AB - A strategy for high-density perpendicular magnetic recording with a soft underlayer is introduced. The approach is based on three concepts: 1) the nonzero magnetic susceptibility of the recording layer; 2) the use of intergranular exchange to partially cancel magnetostatic effects; and 3) a novel head architecture. Micromagnetic simulations involving recording head, soft underlayer, and recording layer are employed to specify a particularly advantageous design. It is shown that the expected density approaches 1 Tbit/in2.

KW - High-density perpendicular recording

KW - Intergranular exchange

KW - Micromagnetics

KW - Permeability

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Areal density limits for perpendicular magnetic recording

Abstract

Bibliographical note

Keywords

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