Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
70 (1991), S. 5133-5135
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Co/Pt multilayer disks with a double-layer and a quadri-layer structure were prepared on a 2 P (photopolimerized) glass substrate with 1-μm-pitched grooves. The read/write characteristics of the disks were studied using Ar gas laser at a wavelength of 488 nm. It was confirmed that very small domains 0.3 μm in length were stably recorded. The carrier-to-noise ratio was 29 and 32 dB (30 kHz BW) at a mark length of 0.3 μm for double-layer and quadri-layer disks, respectively, being larger than that measured for a TbFeCo disk because of a higher figure of merit. In higher-density recording below 0.5-μm mark length, a quadri-layer disk shows a larger recording power margin than a double-layer disk due to the smaller expansion of domain with power, originating from the sharper thermal distribution.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.348988
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