Magnetoresistive effect composite head with laminated magnetic layer isolated from magnetic pole layer
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United States of America Patent
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Jun 8, 1999
Grant Date -
N/A
app pub date -
Nov 17, 1997
filing date -
Nov 15, 1996
priority date (Note) -
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Abstract
A multi-layer structure includes a magnetic pole layer, a magnetic isolation layer extending over the magnetic pole layer, and a magnetic layer extending over the magnetic isolation layer so that the magnetic layer is isolated by the magnetic isolation layer from the magnetic pole layer, the magnetic layer having a unidirectional magnetization in parallel to an interface between the magnetic isolation layer and the magnetic layer, the magnetic isolation layer being capable of suppressing a generation of exchange coupling between the magnetic layer and the magnetic pole layer, so that a magnetization of the magnetic pole layer is biased and stabilized in a direction antiparallel to a direction of magnetization of magnetic layer by static magnetic coupling of the magnetization of the magnetic layer.
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