Patent ID: 8191237
Filing Date: 2012-06-05
Classification: G11B,Y10T

Abstract:
1. A method for providing a structure in a magnetic transducer having an additional structure distal from the structure, a first planarization buffer layer, and an intermediate layer, a first portion of the first planarization buffer layer residing on the structure, a second portion of the first planarization buffer layer residing on the additional structure, a first portion of the intermediate layer residing in a region of the magnetic transducer between the structure and the additional structure, a second portion of the intermediate layer residing above the structure, the method comprising: performing a first planarization, the first planarization exposing a top surface of the magnetic transducer and terminating before a portion of the first planarization buffer layer is removed; providing a second planarization buffer layer having a top and residing above the first planarization buffer layer, the second planarization buffer layer being provided after the step of performing the first planarization; performing a second planarization, the second planarization terminating before the second planarization buffer layer is completely removed; and performing a third planarization terminating after the first planarization buffer layer is exposed and before the first planarization buffer layer is completely removed.