Optical disk and method of magnetically separating tracks of the optical disk

An optical disk, comprising:

• a disk-shaped substrate with pits and grooves formed by emboss processing, in which a predetermined region ranging in a radial direction is used as a data region for recording/reproducing data;
• and
• at least a first dielectric layer, a magnetic layer, and a second dielectric layer that are formed on the substrate,
• wherein the data region includes a plurality of recording/reproducing tracks ranging from an innermost track to an outermost track, and is divided into a plurality of segments in a tangential direction, each segment including a pit region and a groove region;
• the pit region is provided with at least a pair of wobble pits to be used for sample servo;
• the groove region is provided with the recording/reproducing track;
• the recording/reproducing tracks are composed of the grooves;
• and
• the magnetic anisotropy of the magnetic layer positioned on each of lands between the respective recording/reproducing tracks is reduced to a level lower than that of the magnetic anisotropy of the magnetic layers positioned on the grooves, so that the magnetic layers are magnetically separated only between the recording/reproducing tracks respectively and not magnetically separated on extensions of the lands in the pit regions.