Patent ID: 9064521
Filing Date: 2015-06-23
Classification: G11B

Abstract:
1. A method for manufacturing a magnetic recording medium, the method comprising: depositing a carbon (C) layer over a magnetic layer of the magnetic recording medium; depositing a tantalum (Ta) layer over the carbon layer; depositing a photoresist layer over the tantalum layer; patterning the photoresist layer to form a photoresist patterned layer; transferring the photoresist patterned layer to the tantalum layer to form a tantalum patterned layer; and transferring the tantalum patterned layer to the carbon layer to form a patterned carbon layer, wherein a residual layer of the photoresist patterned layer remains after transferring the tantalum patterned layer to the carbon layer, wherein the residual layer allows portions of the tantalum mask layer to be removed before the residual layer is completely etched away, wherein the carbon layer is etched such that etched features of the carbon patterned layer have residual carbon layer remaining after etching through which implantation is performed, wherein no portion of the magnetic layer is exposed.