Magnetic recording medium, method of manufacturing magnetic recording medium, and magnetic storage device

A method of manufacturing a magnetic recording medium, the magnetic recording medium including, in a following order, a substrate, an underlayer, a first magnetic layer, and a second magnetic layer, wherein:

• the first magnetic layer includes a magnetic particle having an L10 structure;
• the second magnetic layer has a granular structure including:
• a magnetic particle having an L10 structure;
• and
• a grain boundary including hexagonal boron nitride;
• a (111) plane of the magnetic particle included in the first magnetic layer is covered with an alloy of VN, Si3N4, YN, or TiN at an interface with the second magnetic layer;
• the magnetic particle included in the second magnetic layer epitaxially grows from a (001) plane of the magnetic particle included in the first magnetic layer;
• and
• the magnetic particle included in the first magnetic layer and the magnetic particle included in the second magnetic layer are columnar crystals that penetrate the first magnetic layer and the second magnetic layer, respectively,
• the method comprising:
• forming the first magnetic layer by sputtering;
• forming the second magnetic layer by sputtering;
• and
• forming, by sputtering, an alloy layer of VN, Si3N4, YN, or TiN between the forming the first magnetic layer and the forming the second magnetic layer.

A magnetic storage device comprising a magnetic recording medium, the magnetic recording medium including, in a following order, a substrate, an underlayer, a first magnetic layer, and a second magnetic layer, wherein:

• the first magnetic layer includes a magnetic particle having an L10 structure;
• the magnetic layer has a granular structure including:
• a magnetic particle having an L10 structure;
• and
• a grain boundary including hexagonal boron nitride;
• a (111) plane of the magnetic particle included in the first magnetic layer is covered with an alloy of VN, Si3N4, YN, or TiN at an interface with the second magnetic layer;
• the magnetic particle included in the second magnetic layer epitaxially grows from a (001) plane of the magnetic particle included in the first magnetic layer;
• and
• the magnetic particle included in the first magnetic layer and the magnetic particle included in the second magnetic layer are columnar crystals that penetrate the first magnetic layer and the second magnetic layer, respectively.