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

• Main Authors: SHIN, HYUN-JUNG, YOO IN-KYEONG, CHOI, WON-BONG
• Format: Patent
• Language: English; French; German
• Published: 27.02.2008
• Subjects: APPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING PROBEMICROSCOPY [SPM]; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; MEASURING; PHYSICS; SCANNING-PROBE TECHNIQUES OR APPARATUS; TESTING

A data recording/reproducing method, a data recording system adopting the same, and media for the system are provided. The method includes the steps of preparing media (20) having a data recording layer in which a phase change is generated through electron absorption, generating electrons using an electron generating source (40) according to data for recording at a position separated from the data recording layer by a predetermined interval, forming a magnetic field (NS) on the path of the electrons and cyclotron (50) moving the electrons, and transmitting the cyclotron moved electrons onto the data recording layer to record data through local melting and cooling due to the absorption of the electrons by the data recording layer. The micro-tip (11) does not contact the data recording layer while the electron beam collides with the data recording layer, and thus no damage is caused by waste of the micro-tip, as with a conventional AFM method, and data recording and reproduction is very fast. In addition, the electron beam is converged onto the data recording layer through cyclotron movement, and thus the region (22a) where the electron beam reaches can be minimized by properly adjusting the distance, to maximize the data recording density.