Patent ID: 7201637
Filing Date: 2007-04-10
Classification: B24B,C09G,G11B,Y10T

Abstract:
1. In a disk drive having a housing, a rotatable magnetic recording medium in the housing, an actuator carrying an actuator arm, a suspension, and a read/write head disposed in adjacent relationship with the recording medium, an improved magnetic write head having a hardbaked resist structure and one or more additional structures containing other materials having comparatively higher surface energy, said structures having a substantially even surface profile in which a surface height differential between said hardbaked resist structure and at least one of said one or more additional structures is less than 150 angstroms as a result of being simultaneously planarized according to a planarization process comprising: preparing a chemical mechanical polishing (CMP) sluny targeted at equaling the rate of removal of said hardbaked resist structure having relatively low surface energy and said one or more additional structures containing other materials of comparatively higher surface energy; said CMP slurry including a liquid vehicle containing an oxidant and a complexing agent, an abrasive, and a surfactant; and applying said CMP sluny to the surface of said structures and simultaneously planarizing said structures using a CMP planarization technique.