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Reliability of Magneto-Optical Memory Disks

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5 Author(s)
Sato, M. ; Daicel Chemical Ind. Ltd, Research Center. ; Onisawa, Y. ; Niwa, H. ; Tsukane, N.
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TbFeCo recording layers were deposited onto polycarbonate (PC) and PMMA substrate disks and their characteristics were examined and compared. The more durable PC substrate disks had lower C/N ratios than the PMMA disks. The use of SiO2 protective layers improved the bit-error rate (BER) of the PC substrates from 2 × 10¿3 to 7 × 10¿5, and there was no changes in the C/N ratios even after 1000 h.

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Magnetics in Japan, IEEE Translation Journal on  (Volume:2 ,  Issue: 5 )