Patent ID: 7217666
Filing Date: 2007-05-15
Classification: B24B,G11B,H01L,Y10T

Abstract:
1. A method for manufacturing a magnetic structure on a magnetic write head, comprising: constructing a photoresist layer having a trench, the trench being formed with a flared portion near the top of the trench; depositing a magnetic material into the trench; removing, the photoresist layer; depositing a dielectric material; first performing a chemical mechanical polish to remove a portion of said dielectric material; then, after performing a chemical mechanical polish to remove a portion of said dielectric material, performing a reactive ion mill procedure to remove a further portion of the dielectric material the reactive ion mill being performed sufficiently to expose said magnetic material, the ion milling being performed in a chemistry to preferentially remove the dielectric material, leaving the magnetic material relatively unaffected.