NDLI: Accurate approximation of fields and spectral response functions for perpendicular recording heads

Content Provider	IEEE Xplore Digital Library
Author	Wilton, D.T. Shute, H.A. Mapps, D.J.
Copyright Year	1965
Abstract	Solutions for the magnetic potential in rectangular regions with simple boundary conditions are used to approximate the two-dimensional potential in the head face plane of a recording head. This method of approximation can be applied to any recording head with rectangular corners, in the presence of an underlayer. The slot approximation is demonstrated for ring heads and shielded (magnetoresistive) pole heads. The quarter plane approximation is given for application to finite-length heads. Estimates of the field components and the spectral response function are derived from the approximate potential. The simple slot approximation is shown to be at least as accurate as other, often more complicated, methods of approximation. Most significantly, both the slot and the quarter-plane approximations are easy to apply and need no prior knowledge of the head field of the particular geometry under consideration.
Sponsorship	IEEE Magnetics Society
Starting Page	2172
Ending Page	2179
Page Count	8
File Size	185269
File Format	PDF
ISSN	00189464
Volume Number	35
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-07-01
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 Magnetic heads Coercive force Disk recording Saturation magnetization Magnetic recording Geometry Mathematics Boundary conditions Magnetoresistance
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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