Gigabit density recording using dual-element MR/inductive heads on thin-film disks

Inductive-write and magnetoresistive (MR)-read dual-element heads of very narrow trackwidths and narrow gaps have been designed, fabricated, and recording-tested on thin-film media of high coercivity and squareness. Results show excellent writability at modest write currents of 50 mA, large readback...

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Veröffentlicht in:IEEE transactions on magnetics 1990-09, Vol.26 (5), p.1689-1693
Hauptverfasser: Tsang, C., Chen, M.-M., Yogi, T., Ju, K.
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container_issue 5
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container_title IEEE transactions on magnetics
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creator Tsang, C.
Chen, M.-M.
Yogi, T.
Ju, K.
description Inductive-write and magnetoresistive (MR)-read dual-element heads of very narrow trackwidths and narrow gaps have been designed, fabricated, and recording-tested on thin-film media of high coercivity and squareness. Results show excellent writability at modest write currents of 50 mA, large readback amplitudes with good signal-to-noise performance, very high linear-density resolution up to 5000 fc/mm (-6-dB density), and trackwidths close to the design dimensions. These results show that such head-disk systems are capable of recording operations at a target areal density of 1 Gb/in/sup 2/. Another result is that novel techniques for measuring nonlinear transition shifts as well as offtrack and squeeze performance have been developed.< >
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subjects Applied sciences
Coercive force
Disk recording
Electronics
Exact sciences and technology
Magnetic films
Magnetic heads
Magnetic recording
Magnetoresistance
Signal resolution
Storage and reproduction of information
Target tracking
Testing
Transistors
title Gigabit density recording using dual-element MR/inductive heads on thin-film disks
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