Magneto optical memory element

摘要

A magneto-optical memory element includes a substrate (11) having guide track grooves (12), and a multilayered data recording structure (31 to 34) provided on the substrate. The substrate also includes at least one address signal pit (13) provided between two successive guide track grooves (12). The recording structure is formed at least in the guide track grooves and has a substantially uniform thickness within each of the guide track grooves. The width (t1) of the address signal pit is less than the width (t2) of each of the guide track grooves. <IMAGE> <IMAGE>