A write head design with improved field profile for perpendicular recording

A large-scale read/write head model for perpendicular magnetic recording similar to that described in ref. 1 was constructed. The perpendicular field components between the head and image plane were measured and analyzed over a range of controlled direct currents in the main pole (N1) and saturable...

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Bibliographic Details
Published inIEEE transactions on magnetics Vol. 20; no. 5; pp. 836 - 838
Main Authors Chi, C., Szczech, T.
Format Journal Article
LanguageEnglish
Published IEEE 01.09.1984
Subjects
Coils
Current measurement
Image analysis
Large-scale systems
Magnetic analysis
Magnetic field measurement
Magnetic heads
Perpendicular magnetic recording
Probes
Transistors
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Summary:A large-scale read/write head model for perpendicular magnetic recording similar to that described in ref. 1 was constructed. The perpendicular field components between the head and image plane were measured and analyzed over a range of controlled direct currents in the main pole (N1) and saturable subcore (N2) coils. The fringing field profiles were found to have values between those of a probe head type and a nonsymmetrical thin film type. However, under certain conditions the field gradient in the gap region of this configuration can be significantly greater than that of a probe head. This is desirable to minimize record demagnetization. This type of head design combines the features of a probe head for writing and a ring head for reading. The flexibility of field profile control of this design also offers the possibility of using a large-scale version for particle perpendicular orientation.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.1984.1063351