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US 5,699,605 AGranted
Method for forming a magnetic thin film head with recessed basecoat
AssigneeSeagate Technology LLC
InventorsNurul Amin, John Bortins, Ying Yan
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Abstract
A thin film magnetic head is carried in a recessed region which is etched in a basecoat. The thin film magnetic head includes upper and lower pole pieces having an upper pole tip and a lower pole tip, respectively. The upper and lower pole tips form a magnetic flux gap. Electrical conductors are carried in an insulating layer between the upper and lower pole pieces. The magnetic flux gap defines a plane which is generally parallel with a plane defined by the conductors. The electrical conductors lie on either side of the plane.
Claims9
A method of forming a thin film magnetic head, comprising:
- depositing a basecoat on a substantially planar substrate;
- forming a recessed region in the basecoat, wherein the recessed region has a depth;
- depositing a magnetic bottom pole piece having a bottom pole leg and a bottom pole tip on th basecoat, wherein the bottom pole leg is deposited in the recessed region of the basecoat;
- depositing insulating material on the magnetic bottom pole piece, wherein the insulating material has a plurality of electrical conductors extending therethrough;
- and
- depositing a magnetic upper pole piece having an upper pole leg overlying the bottom pole leg and an upper tip overlying the bottom pole tip forming a transducing gap for reading and writing magnetically encoded information, wherein the transducing gap defines a plane through the thin film magnetic head and the upper and bottom pole pieces are generally symmetric about the plane.
3 more elements
Dependencies are inferred from the claim text.