Method of fabricating thin film write heads with a shortened yoke and improved dimension control
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United States of America Patent
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Jun 17, 2008
Grant Date -
N/A
app pub date -
Dec 6, 2005
filing date -
Feb 27, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for fabricating a magnetic recording head writer. The writer includes a bottom magnetic pole and a write gap formed over the bottom pole and a coil trench formed in the bottom pole. A top magnetic pole is provided as two layers with the first layer including front and back tips with spaced apart walls positioned adjacent the trench bottom defining trench sides. A pole cover layer is included that is made up of a thin layer of insulating material deposited to cover sides and bottom of the coil trench. A bottom coil is formed on the pole cover layer in the bottom of the coil trench and coil insulation is provided between coil elements and adjacent trench walls and covemg the coil. A top coil with insulation is formed over the planarized bottom coil insulation and the top pole second layer is formed over the top coil.
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