NDLI: Current transients and the Guzik: a case study and methodology for qualifying a spin stand for GMR testing

Content Provider	IEEE Xplore Digital Library
Author	Himle, J. Bailey, R. Hogue, J. Fishman, A. McKenzie, R. Porter, T. Boone, W.
Copyright Year	1998
Description	Author affiliation: Maxtor Corp., Longmont, CO, USA (Himle, J.)
Abstract	Repeated dynamic electrical test of current generation anisotropic magnetoresistive (AMR) heads indicated that ESD exposure was likely during test, characterized as a decline in amplitude over time. Giant magnetoresistive (GMR) heads failed catastrophically upon mounting to the Guzik spin stand. By evaluating AMR performance under repeated controlled test sequences, as well as direct current transient measurement techniques, we determined that the particular configuration of software and hardware which was being used during this test generated current transients across the recording head of up to 40 mA peak currents, which was believed to cause both the AMR degradation and the GMR failures. By modifying the hardware and software, the problem was successfully resolved. Qualification of electrical test equipment using current transient measurements was found to be invaluable in fully understanding and correcting current transient problems in test processes.
Starting Page	328
Ending Page	331
File Size	340531
Page Count	4
File Format	PDF
ISBN	1878303910
DOI	10.1109/EOSESD.1998.737053
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-10-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	EOS/ESD Association, Inc.
Subject Keyword	Anisotropic magnetoresistance Giant magnetoresistance Magnetic heads Software testing Hardware Character generation Electrostatic discharge Measurement techniques Software performance DC generators
Content Type	Text
Resource Type	Article

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In-situ spin stand ESD testing of giant magnetoresistive (GMR) recording heads

Modeling Electrostatic Discharge Affecting GMR Heads

A study of ESD sensitivity in AMR and GMR recording heads

Electromagnetic interference (EMI) damage to giant magnetoresistive (GMR) recording heads

Micro-track profiles of ESD damaged AMR and GMR heads

GMR heads as ESD detectors - a direct assessment of subtle ESD

A study of diode protection for giant magnetoresistive recording heads

A study of shunt ESD protection for GMR recording heads

ESD phenomena in GMR heads in the manufacturing process of HDD and GMR heads

Current transients and the Guzik: a case study and methodology for qualifying a spin stand for GMR testing

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Modeling Electrostatic Discharge Affecting GMR Heads

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Current transients and the Guzik: a case study and methodology for qualifying a spin stand for GMR testing