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Effects of Bi on crystallisation in Ge–Sb–Te–Bi
Materials Science and Technology
Blue light optical storage products will become the next generation devices for recording media in the near future. To increase the crystallisation speed of recording by 405 nm wavelength blue laser diode, bismuth (Bi) is applied to substitute small quantities of antimony (Sb) in a pseudobinary GeTe-Sb 2 Te 3 (GeSb 2 Te 4 ) alloy material. It is shown that the activation energies for crystallisation of Ge-Sb-Te-Bi are reduced by addition of Bi indicating the improvement of recording speed. Thedoi:10.1179/174328408x276026 fatcat:3griq6sfejdepcw75riwcql5dy