NDLI: A perpendicular write head design for high-density recording

Content Provider	IEEE Xplore Digital Library
Author	Batra, S. Covington, M. Crawford, T.M. Crue, B. van der Heijden, P.A.A. Jayashankar, J. Johns, E.C. Kryder, M. Minor, K. Rottmayer, R. Tran, U. West, J.
Copyright Year	1965
Abstract	In this paper, we discuss a single-pole perpendicular head design and process that is suitable for densities of the order of 100 Gb/in/sup 2/. The single-pole write head was integrated with a narrow-track bottom spin valve reader. The design uses a single-turn coil to generate magnetomotive force in the head. Because of the very short yoke length that is achieved by using a single-coil turn, this writer design has a very low head inductance. Low magnetic impedance of the head makes it suitable for high data rate writing. Using the finite element model (FEM), the head geometry was optimized to write on media with coercivity (H/sub c/) of 5000 Oe. Because of the very efficient head structure, a write current below 100 mA was sufficient. As trackwidths are reduced, the field contours at the media show significant curvature, resulting in written-in transition curvature. Because of the very small yoke structure, no degradation of low-frequency amplitude up to /spl plusmn/90 Oe of external field is observed.
Sponsorship	IEEE Magnetics Society
Starting Page	157
Ending Page	162
Page Count	6
File Size	312078
File Format	PDF
ISSN	00189464
Volume Number	38
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic heads Perpendicular magnetic recording Process design Spin valves Coils Inductance Impedance Writing Finite element methods Solid modeling
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Finite Element Modeling of Writer Head Design for Shingled Recording

Micromagnetic Simulation of head-field and write bubble dynamics in perpendicular recording

Micromagnetic modeling of head field rise time for high data-rate recording

Finite-Element and Micromagnetic Modeling of Write Heads for Shingled Recording

Effect of Write Current Waveform on Magnetization and Head-Field Dynamics of Perpendicular Recording Heads

Readback bit shift with finite pole-length heads on perpendicular media

Finite-element analysis of ring and single-pole write heads for perpendicular recording

Partitioning of the perpendicular write field into head and SUL contributions

Crosstalk Between Write Transducers

A perpendicular write head design for high-density recording

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