High density data recording/reproduction method utilizing electron emission and phase change media, and data recording system adopting the same, and media for the system

A data recording system, comprising:

• media having a data recording layer in which a phase change is generated through electron absorption;
• an electron generating source installed at a position separated from the data recording layer by a predetermined interval for emitting electrons according to data for recording on the data recording layer;
• and
• a magnetic field generating source for forming a magnetic field for cyclotron movement of the electrons on the path of the electrons between the electron generating source and the media.

A tracking method for a data recording system, comprising:

• preparing media having grooves exposing a data recording layer in which a phase change is generated through electron absorption;
• generating electrons according to data for recording using an electron generating source at a position separated from the data recording layer by a predetermined interval;
• forming a magnetic field on the path of the electrons, and cyclotron moving the electrons;
• transmitting the cyclotron moved electrons onto the data recording layer;
• detecting secondary electrons or scattered electrons generated by the media from above both sides of the groove into which an electron beam is transmitted;
• and
• adjusting the position of the electron generating source according to the amount of secondary electrons or scattered electrons detected, such that the same amount of electrons within a predetermined range are detected at each side of the groove.