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Write-once optical data storage media for shorter wavelengths using aluminium-silver compound metal island films

Write-once optical data storage media for shorter wavelengths using aluminium-silver compound metal island films

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Aluminium (Al)-silver (Ag) compound metal island (CMI) films fabricated by using a two-step evaporation method have been realised for use as write-once (WO) optical data storage media for shorter wavelengths. The Al-Ag CMI films have a high reflectance for blue light as the resonance wavelength exists in the 450–500 nm range. It has been experimentally confirmed that the reflectance of the Al-Ag CMI film is significantly reduced by heating at a temperature of >200°C. This suggests that the Al-Ag CMI films may be useful as WO media for shorter wavelengths with larger storage density.

References

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      • K. Baba , K. Hayashi , I. Syuaib , K. Yamaki , M. Miyagi . Write-once optical data storage media with large reflectance change withmetal-island films. Appl. Opt. , 2421 - 2426
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      • K. Baba , Y. Ohkuma , M. Miyagi . Silver-gold compound metal island filmsfor durable write-once optical disk memories. Electron. Lett. , 497 - 498
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