Abstract

Magnetic field modulation method is one of the most promising type of high speed overwriting in the magneto-optic disk.l) In this method, a focused laser beam continuously irradiates an information track through the disk substrate and a magnetic field applied by a magnetic head is modulated with the information to be recorded. Information is stored at domain position, or at both side edges of one domain, called domain-edge recording. It has been found that written domain edge in magnetic field modulation method shifts from the position of laser beam irradiated when magnetic field is reversed.

© 1989 Optical Society of America