| Autor: |
Kuroda, Sumio, Keiji Shono, Keiji Shono, Seiya Ogawa, Seiya Ogawa |
| Zdroj: |
Japanese Journal of Applied Physics; February 1992, Vol. 31 Issue: 2 p431-431, 1p |
| Abstrakt: |
Both a pregroove and aftergroove were formed in a garnet medium on a GGG substrate, and a reliable 785-nm laser diode tracking servo produced. Magnetic field modulation recording for the pregrooved media produced a carrier to noise ratio (CNR) of 48 dB, and overwriting gave complete erasure. Writing was impossible in the off-track zone of the aftergrooved media, which we believe will be useful in improving the overwrite power margin. There is a problem of deterioration of coercivity, caused by wet etching during fabrication of the aftergroove, which remains to be solved. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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