Patent ID: 8029682
Filing Date: 2011-10-04
Classification: B82Y,G11B

Abstract:
1. A method of manufacturing a magnetic recording medium, comprising: forming a first hard mask, a second hard mask and a resist on a magnetic recording layer; imprinting a stamper to the resist to transfer patterns of protrusions and recesses to the resist; removing residues in the recesses of the patterned resist; etching the second hard mask by using the patterned resist as a mask to transfer the patterns of protrusions and recesses to the second hard mask; etching the first hard mask by using the second hard mask as a mask to transfer the patterns of protrusions and recesses to the first hard mask; processing the magnetic recording layer exposed in the recesses with a modifying treatment by reactive ion etching comprising a gas selected from the group consisting of CF deactivating the magnetic recording layer exposed in the recesses by ion beam etching using a gas selected from the group consisting of He, O