Magnetic medium having an artificial pattern structure using a gradient of a magnetization reversal field and a method of use thereof

A magnetic recording method for a pattern medium, the method comprising:

• controlling a tracking position of a recording head to scan a recording magnetic pole center portion on a side where a magnetization reversal field is relatively greater than at a center of a pattern dot of an artificial pattern on a medium;
• and
• applying a recording magnetic field in synchronism with a time when a trailing edge of the recording magnetic pole passes over the pattern dot,
• wherein the pattern dot is a minimum magnetization reversal unit bearing recorded information as magnetic information, and
• wherein a gradient direction of the magnetization reversal field is substantially coincident between adjacent pattern dots.

A magnetic recording method for a pattern medium, the method comprising:

• controlling a tracking position of a recording head so that a stronger magnetic field is applied to a region where a magnetization reversal field of a pattern dot of an artificial pattern on a medium to record is relatively greater;
• and
• applying a recording magnetic field in synchronism with a timing when a trailing edge of the recording magnetic pole passes over the pattern dot to record,
• wherein the pattern dot is a minimum magnetization reversal unit bearing recorded information as magnetic information,
• wherein the pattern dot has a gradient of a magnetization reversal field in a track transverse direction,
• wherein a region where the magnetization reversal field is relatively small is disposed on a side of the pattern dot having a previously recorded track, and
• wherein a gradient direction of the magnetization reversal field is substantially coincident between adjacent pattern dots.

A magnetic recording method for a pattern medium, the method comprising:

• locally heating a region where a magnetization reversal field of a pattern dot of an artificial pattern to record is relatively greater;
• and
• applying a recording magnetic field to the pattern dot to record,
• wherein the pattern dot is a minimum magnetization reversal unit bearing recorded information as magnetic information,
• wherein the pattern dot has a gradient of a magnetization reversal field in an in-plane direction of a substrate, and
• wherein a gradient direction of the magnetization reversal field is substantially coincident between adjacent pattern dots.