Track density constraints in the application of MR head technology

Demonstrations of high anal density magnetic recording using MR heads have kindled interest in the practical application of this technology to small form factor disk drives. The write-wide, read-narrow feature of the dual element head and its large velocity-independent signal promises substantial gr...

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Bibliographic Details
Published in1992. Digests of Intermag. International Magnetics Conference p. 259
Main Authors Chopra, K., Grammens, G.M., Weinstein, R.E.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1992
Subjects
Digital magnetic recording
Disk recording
Interference
Magnetic analysis
Magnetic heads
Magnetic recording
Magnetoresistance
Performance analysis
Transistors
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Summary:Demonstrations of high anal density magnetic recording using MR heads have kindled interest in the practical application of this technology to small form factor disk drives. The write-wide, read-narrow feature of the dual element head and its large velocity-independent signal promises substantial growth in track density and linear density. This paper examines the impact of some fundamental design and manufacturing constraints on the hack density and the selection of practical operating points. Recently reported heads have the MR reader separated from the inductive writer by a distance of several microns along the track. When used with a rotary actuator, this results in skew misalignment between the write track and the read track, which limits the practical track density. Previous models of track density with MR heads do not consider this case.
ISBN:0780306376
9780780306370
DOI:10.1109/INTMAG.1992.696442