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    National Tsing Hua University Institutional Repository > 工學院  > 材料科學工程學系 > 會議論文  >  Application of simulation on the design of phase-change optical recording disks

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/52889

    Title: Application of simulation on the design of phase-change optical recording disks
    Authors: Lih-Hsin Chou;Chun-Ping Jen;Ching-Chang Chieng
    教師: 周麗新
    Date: 1998
    Publisher: Institute of Electrical and Electronics Engineers
    Relation: Magnetics, IEEE Transactions on , Volume: 34 Issue:2 , PP.414 - 416
    Keywords: phase-change
    Abstract: Optical absorption and thermal conduction are the two key factors affecting temperature distribution and, subsequently, the write, erase characteristics of a phase-change optical recording disk. Therefore, by using carefully measured film physical properties of each layer, this work simulates a transient temperature profile while simultaneously considering optical absorption and thermal conduction. Through the simulated transient temperature profile, cooling-rate and reflectivity, dependence of phase-changed spot size on the laser power and laser pulse duration was observed. The proper combination of the disk structure and the associated write, erase conditions are obtained as well. A disk structure can subsequently be designed on the basis of this information. In addition, a novel dielectric layer, i.e. hydrogenated amorphous carbon (α-C:II), is simulated and compared with the disk applying conventionally used ZnS-SiO2 dielectric layers. The disk structures used herein are PC/ZnS-SiO2/GeSbTe/ZnS-SiO2/Al and PC/α-C:H/GeSbTe/α-C:H/Al. According to those results, α-C:H film is highly promising as a dielectric layer of the phase change optical recording disk for both wavelengths of 780 and 660 nm.
    URI: http://www.ieee.org/
    Appears in Collections:[材料科學工程學系] 會議論文

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