Patent ID: 7526856
Filing Date: 2009-05-05
Classification: G11B,H01F,Y10T

Abstract:
1. A method of processing a thin film slider comprising the steps of: forming a thin film slider on a wafer; separating the thin film slider from the wafer to expose an air-bearing surface having a magnetic feature; applying a photoresist to the air-bearing surface; applying a magnetic field oriented perpendicular to the air-bearing surface; applying a liquid ferrofluid over the photoresist on the air-bearing surface to deposit ferrofluid material over the magnetic feature forming a ferrofluid mask on the photoresist over a first selected area above the magnetic feature; allowing the ferrofluid to dry; exposing the thin film slider to light; developing the photoresist; removing the photoresist outside of the ferrofluid mask to form a photoresist mask and to expose a second selected area of the air-bearing surface around the first selected area; milling the second selected area to form a recessed area around the first selected area; and removing the ferrofluid mask and photoresist mask.