Method of manufacturing nano-template for a high-density patterned medium and high-density magnetic storage medium using the same
View Patent ↗Disclosed is a method for manufacturing a template for a high-density patterned medium and a high-density magnetic storage medium using the same. In the method, magnetic particles are used as a mask and no lithographic process is required.
1. A high-density magnetic storage medium comprising:
a substrate having a surface;
a perpendicular magnetic recording layer formed on the surface of the substrate;
a magnetic particle layer formed on the perpendicular magnetic recording layer, the magnetic particle layer having magnetic particles are arranged to form a pattern; and
concentric circles of protrusions formed on the perpendicular magnetic recording layer;
wherein the magnetic particle layer is arranged between the concentric circles of protrusions; and
wherein the high-density magnetic storage medium further comprises a passivation layer on the magnetic particle layer.
2. The high-density magnetic storage medium as claimed in claim 1 , wherein a material of the perpendicular magnetic recording layer comprises CoCrPt.
3. The high-density magnetic storage medium as claimed in claim 1 , wherein the magnetic particles of the magnetic particle layer each have an identical magnetic anisotropy which is perpendicular to the surface of the substrate.
4. The high-density magnetic storage medium as claimed in claim 3 , wherein the magnetic particles have a cylindrical shape or a cubic shape.
5. The high-density magnetic storage medium as claimed in claim 3 , wherein a material of the magnetic particles comprises a metal selected from the group consisting of Co, CoPt, CoP, CoPtCr, and an alloy thereof.
6. The high-density magnetic storage medium as claimed in claim 1 , wherein the magnetic particles of the magnetic particle layer are arranged by a magnetic field applied perpendicularly to the substrate.