MARK OBSERVATION OF TBFECO RECORDED ON LAND GROOVE SUBSTRATE BY SPIN-POLARIZED SCANNING ELECTRON-MICROSCOPY/

Using spin-polarized scanning electron microscopy, the laser power dep endence of recorded mark shapes and sizes is studied for the TbFeCo, m agneto-optical recording medium, prepared an a land/groove-shaped subs trate. The bit width which increases with laser power is suppressed to the land or groove width during higher power, showing that the land/g roove border acts as a barrier lu bit expansion. These results confirm the advantages of a land/groove shaped medium for high density record ing. (C) 1996 American Institute of Physics.