TY - JOUR
AU1 - Takahashi, A.
AU2 - Katayama, H.
AU3 - Inui, T.
AU4 - Ohta, K.
AU5 - Yamaoka, H.
AB - The effect of the groove profile on the characteristic properties of a magneto-optical (MO) disk with a quadrilayer structure (A1N/GdTbFe/A1N/A1) prepared on a glass substrate was investigated, using a micro Kerr-effect measuring apparatus. Taking a diffraction effect into account, we have calculated the dependence of signal quality on the groove profile, being in agreement with experiments. The carrier to noise ratio reaches to 51 dB at high recording density where the bit length is 1.0 μm. In order to obtain a better understanding of the reliability of the MO disk, the MO disks were exposed to various environments with respect to temperatures and humidities. Though the readout signals of recorded bits do not change after the aging tests, the recording sensitivity is reduced slightly after exposing at high temperatures. Therefore, the lifetime of the MO disk depends upon the stability of recording sensitivity and was evaluated as about 18 years using the Arrhenious equation.
TI - High Quality Magneto-Optical Disk
JF - Proceedings of SPIE
DO - 10.1117/12.936818
DA - 1987-01-14
UR - https://www.deepdyve.com/lp/spie/high-quality-magneto-optical-disk-ev5y3Ucm0g
SP - 65
EP - 71
VL - 695
IS - 
DP - DeepDyve
ER -