Abstract

We designed a new reflective material for high-density optical data storage to manage both recording and reproducing properties and environmental impact. We achieved suitable characteristics using an Al based alloy including two additional elements. In the case that AlPdSnO2 was applied in a Blu-ray disc (BD) type write-once disk, recording and reproducing properties equivalent to those for the conventional Ag alloy of AgPdCu were achieved. Moreover, in the case that it was applied for a BD-type read-only disk, jitter was improved compared with the conventional Al alloy of AlTi.

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