Patent ID: 8011084
Filing Date: 2011-09-06
Classification: B82Y,G01R,G11B,Y10T

Abstract:
1. A method for manufacturing a magnetoresistive sensor, comprising: providing a lead layer; depositing a series of sensor layers over the lead layer; depositing a layer of diamond like carbon (DLC); forming a first mask structure over the first layer of DLC, the first mask structure being a trackwidth defining mask structure having first and second openings at either side of a sensor defining track width portion; performing a reactive ion etching to remove portions of the first DLC layer that are not protected by the first mask layer; performing an ion milling to remove a portion of the series of sensor layers that is not protected by the first mask structure; forming a second mask structure having an opening that leaves uncovered the first and second openings of the first mask structure and the sensor defining track width portion; depositing a magnetic bias material to a depth such that the top of the hard bias material is located substantially at the level of the top of the series of sensor layers; removing the second mask layer; and performing a chemical mechanical polishing.