Magnetic sensor having antiferromagnetic layers and free magnetic layer and method for manufacturing magnetic sensor
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United States of America Patent
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Dec 25, 2007
Grant Date -
Mar 31, 2005
app pub date -
Sep 21, 2004
filing date -
Sep 26, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
At two sides of a multilayer film including a free magnetic layer, a first non-magnetic material layer, and a fixed magnetic layer, extension portions extending from the fixed magnetic layer are formed. At lower sides of the extension portions, a pair of first antiferromagnetic layers is formed with a space therebetween in a track width direction, and in addition, at upper sides of the extension portions, a pair of second antiferromagnetic layers is formed with a space therebetween in the track width direction.
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