Magnetic head with glass used to bond together two core halves h

Details Magnetic head with glass used to bond together two core halves h Magnetic head with glass used to bond together two core halves h

1996-05-30

1998-01-13

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Head

Gap spacer

360120, 360125, 2960321, G11B 523

Patent

active

057085439

ABSTRACT:
A magnetic head according to the present invention can generate excellent readout output even with a reduced track width by controlling the stress applied to the half magnetic cores from the glass. The magnetic head comprises a pair of magnetic cores made of ferromagnetic oxide, at least one of which has a groove for a coil and which are bonded together with the glass with a gap material in-between, wherein the coefficient of thermal expansion of the glass to bond magnetic cores together is smaller than that of the ferromagnetic oxide by 20.times.10.sup.-7 to 35.times.10.sup.-7 per degree Celsius.

REFERENCES:
patent: 5086553 (1992-02-01), Goto et al.
patent: 5157569 (1992-10-01), Kumasaka et al.
patent: 5270894 (1993-12-01), Okuda et al.

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