NDLI: Recording performance characteristics of granular perpendicular media

Content Provider	IEEE Xplore Digital Library
Author	Wen Jiang Velu, E.M.T. Malhotra, S. Jung, H.S. Chi Kong Kwok Bertero, G. Wachenschwanz, D.
Copyright Year	1965
Abstract	The recording performance of CoCrPtO granular-type perpendicular media was examined with two types of perpendicular heads to demonstrate the importance of matching head and media designs in perpendicular recording. Shielded-pole heads with high write field gradients, field angles, and sufficient write field magnitude yielded superior writability and signal-to-noise ratio as compared to mono-pole heads. The recording performance dependences on head-to-medium spacing, interlayer thickness, and soft-underlayer (SUL) thickness were also weaker with the shielded-pole heads. In addition, the effect of stray fields on the SUL domain noise was investigated for a synthetic antiferromagnetically-coupled (SAF) SUL. A radial field close to the exchange field of the SAF SUL was found to induce domain noises that could potentially cause errors in recording systems.
Sponsorship	IEEE Magnetics Society
Starting Page	587
Ending Page	592
Page Count	6
File Size	570576
File Format	PDF
ISSN	00189464
Volume Number	41
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic heads Perpendicular magnetic recording Signal to noise ratio Antiferromagnetic materials Soft magnetic materials Coercive force Writing Digital recording Magnetic shielding US Department of Energy synthetic antiferromagnetically-coupled (SAF) soft-underlayer Granular double-layer media perpendicular recording soft-underlayer (SUL) domain noise
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Transition Noise Analysis of Recording Media With a Soft Underlayer (SUL) and an Antiferromagnetic Soft Underlayer (AF-SUL)

Influence of polarity of media DC background on write/read performance in perpendicular media with an antiferromagnetically stabilized soft underlayer

Transition noise characteristics of PMR media with the synthetic antiferromagnetic coupled soft underlayer

Preconditioning, write width, and recording properties of Co-Cr-Pt-O perpendicular media with various underlayer designs

Film optimization of laminated antiferromagnetically coupled media

Antiferromagnetically coupled perpendicular recording media

Very high-density and low-cost perpendicular magnetic recording media including new layer-structure U-Mag

Writability Improvement in Perpendicular Recording Media Using Crystalline Soft Underlayer Materials

Patterned Soft Underlayers for Perpendicular Media

Recording performance characteristics of granular perpendicular media

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