NDLI: Comparison of thin film and ring heads for perpendicular recording

Content Provider	IEEE Xplore Digital Library
Author	Jian-Gang Zhu Bertram, H.
Copyright Year	1965
Abstract	A self-consistent computer simulation model has been developed to study the write process of perpendicular recording with a single layer recording medium. The calculation shows that recording with a thin film head gives a significantly less write spacing loss than with a ring head. In contact, recording with either a thin film head or a ring head produces sharp transitions with high overshoot. The thin film head write spacing loss is approximately spacing independent with an averaged value of -26dB per unit change of d/λ. The ring head write spacing loss is very spacing dependent with a value of -120dB per unit change of d/λ at small spacings. For a typical head-medium spacing in rigid disk application, a 3.5dB difference in the rms voltage spectrum occurs between the two kinds of recording at a wavelength equal to twice the gap-length; the peak of the isolated voltage pulse is 2.9dB higher for recording with a thin film head than with a ring head.
Sponsorship	IEEE Magnetics Society
Starting Page	177
Ending Page	179
Page Count	3
File Size	336621
File Format	PDF
ISSN	00189464
Volume Number	23
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1987-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transistors Magnetic heads Perpendicular magnetic recording Voltage Magnetization Disk recording Coercive force Magnetic recording Computer simulation Aging
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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