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 method, comprising:

• preparing media having 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 and performing data recording through local melting and cooling due to the absorption of the electrons by the data recording layer;
• providing an electric field emitting means including a micro-tip for emitting electrons and a gate electrode interposed between the micro-tip and the data recording layer in the electron generating source;
• providing a conductive substrate to the media;
• applying a maximum substrate voltage to the conductive substrate;
• and
• applying a gate voltage lower than the substrate voltage to the gate electrode.

A data recording method, comprising:

• preparing media having 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 and performing data recording through local melting and cooling due to the absorption of the electrons by the data recording layer;
• controlling the interval between the electron generating source and the data recording layer such that after the electrons have been emitted by the electron generating source, the electrons are rotated once, or an integer multiple number of times, during cyclotron movement;
• providing an electric field emitting means including a micro-tip for emitting electrons and a gate electrode interposed between the micro-tip and the data recording layer in the electron generating source;
• providing a conductive substrate to the media;
• applying a maximum substrate voltage to the conductive substrate;
• and
• applying a gate voltage lower than the substrate voltage to the gate electrode.

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, the magnetic field generating source including one pole of a magnet disposed above the data recording layer and an opposite pole of the magnet disposed below the data recording layer.

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 by disposing one pole of a magnet above the data recording layer and disposing an opposite pole of the magnet below the data recording layer, 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.