標題: Initialization characteristics and their effects on the erasability of phase change optical disks using transmission electron microscopy
作者: Chen, HW
Hsieh, TE
Liu, JR
Shieh, HPD
材料科學與工程學系
光電工程學系
Department of Materials Science and Engineering
Department of Photonics
關鍵字: phase change optical disks;initialization;mark characteristics;erasability;transmission electron microscopy
公開日期: 1-Mar-1999
摘要: We investigated the microstructure of phase change optical disks subjected to various initialization conditions using transmission electron microscopy (TEM). The effects of initialization powers on the erase ratio of phase change optical disks and corresponding microstructure changes were also studied. It was found that the increase of initialization power enlarged the width of the recrystallization band formed in the recording media of the disk. A wide recrystallization band was effective for decreasing the residual signal level hence the erase ratio increased. Disk dynamic test and TEM study results also revealed the deterioration of carrier-to-noice ratio (CNR) characteristic and the increasing trend of erase ratio was reduced when a substantial amount of coarse grains appeared in the crystalline region. This elucidates the necessity for phase change optical disks to have good heat dissipation property in order to suppress the formation of coarse granular structures.
URI: http://dx.doi.org/10.1143/JJAP.38.1691
http://hdl.handle.net/11536/31476
ISSN: 0021-4922
DOI: 10.1143/JJAP.38.1691
期刊: JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
Volume: 38
Issue: 3B
起始頁: 1691
結束頁: 1697
Appears in Collections:Conferences Paper


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