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    National Tsing Hua University Institutional Repository > 工學院  > 材料科學工程學系 > 期刊論文 >  Laser-induced crystallization in AgInSbTe phase-change optical disk


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/52662


    Title: Laser-induced crystallization in AgInSbTe phase-change optical disk
    Authors: Chang YY;Chou LH
    教師: 周麗新
    Date: 2005
    Publisher: Japan Society of Applied Physics
    Relation: JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS,Volume: 44,Issue: 5A,Pages: 3042-3048,Published: MAY 2005
    Keywords: CHANGE RECORDING MATERIAL
    HIGH-DENSITY
    SYSTEM
    Abstract: Laser-induced crystallization in the initialization and erasing processes of a AgInSbTe phase-change optical recording disk was studied. After laser initialization, a AgInSbTe film formed a metastable face-centered cubic (f.c.c.) phase. Both the high-resolution transmission electron microscopy (HRTEM) cross-sectional image and the static test results showed the difficulty of nucleation. At low linear velocities, i.e., CD 1X and CD 2X, several clusters formed in amorphous marks due to the low cooling rate and the longer reheating of the subsequently applied pulses. These clusters enhanced nucleation and the amorphous marks probably crystallized via the nucleation and grain growth mechanism in the erasing process. The degree of order in the amorphous marks decreased with linear velocity, and no clusters existed in the amorphous marks at CD 4X. Due to the difficulty of nucleation, the erasing process was predominated by the direct grain growth mechanism at high linear velocities.
    URI: http://www.jsap.or.jp/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/52662
    Appears in Collections:[材料科學工程學系] 期刊論文

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