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Rewritable compact discs (CDs) using magnetooptical (MO) materials have been developed. The disks were prepared by depositing Si3N4, TbFeCo alloy, Si3N4 and Al films on polycarbonate substrates using a magnetron sputtering system. Sputter etching was carried out for the Si3N4 layer proir to depositing the magnetic layer, with the very interesting result that the external magnetic field sensitivity...
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