NDLI: SNR improvement of granular perpendicular recording media

Content Provider	IEEE Xplore Digital Library
Author	Zheng, M. Choe, G. Chekanov, A. Demczyk, B.G. Acharya, B.R. Johnson, K.E.
Copyright Year	1965
Abstract	In this paper, we address important issues on the performance improvement of perpendicular magnetic recording (PMR) media, such as noise reduction by adjusting the soft magnetic underlayer (SUL) properties and recording layer and intermediate layer modifications for optimum signal-to-noise (SNR) performance. The permeability of the SUL plays a significant role in writability and SNR. Proper pinning of the SUL should be considered for reducing spike noise. A systematic comparison of alloy and oxide granular media shows that optimized oxide media can provide both better SNR and good thermal stability and is promising for high-density recording.
Sponsorship	IEEE Magnetics Society
Starting Page	1919
Ending Page	1924
Page Count	6
File Size	1497680
File Format	PDF
ISSN	00189464
Volume Number	39
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Perpendicular magnetic recording Signal to noise ratio Permeability Noise reduction Soft magnetic materials Thermal stability Magnetic heads Disk recording Magnetic recording Nonhomogeneous media
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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