Phase Transition Kinetics and Recording Characteristics of Nanocomposite Layers Prepared by Sputtering Process Utilizing AgInSbTe–SiO2 Composite Target

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概要

• 論文の詳細を見る

• AgInSbTe (AIST)–SiO2 nanocomposite thin films were successfully prepared by sputtering deposition utilizing an AIST–SiO2 composite target and their phase-transition behaviors were investigated. Transmission electron microscopy (TEM) revealed that the as-deposited composite layer contained nano-scale quaternary alloy particles about 5 nm in size randomly embedded in the SiO2 matrix. In situ reflectivity–temperature measurements showed that the AIST–SiO2 nanocomposite and pristine AIST layers exhibit similar abrupt reflectivity changes at about 200 °C. However, the presence of the SiO2 phase hindered particle growth in the nanocomposite layers which, in turn, caused a mild increase in the phase-transition temperatures. Johnson–Mehl–Avrami (JMA) analysis indicated that, regardless of the film thickness, the amorphous-to-crystalline transition in nanocomposite layers proceeds in a bulk-like manner. Dynamic tests revealed that modulations higher than 0.8, 0.6, and 0.5 were achieved when 11T, 4T, and 3T signals, respectively were, written in the one-layer AIST–SiO2 disk sample. The unique phase transition behavior of nanocomposite layers and signal property analysis of disk samples demonstrated that a nanocomposite layer can be a new alternative for write-once optical data storage.

• 2008-07-25

著者

• Hsieh Tsung-eong

  Department Of Materials Science And Engineering National Chiao Tung University

• Lee Tsang-Sheau

  Solar Applied Material Technology Co., No. 1, Gongye 3rd Rd., Annan District, Tainan, Taiwan 709, R.O.C.

• Mai Hung-Chuan

  Department of Materials Science and Engineering, National Chiao Tung University, 1001 Ta-Hsueh Rd., Hsinchu, Taiwan 30010, R.O.C.

• Huang Sung-Hsiu

  Department of Materials Science and Engineering, National Chiao Tung University, 1001 Ta-Hsueh Rd., Hsinchu, Taiwan 300, R.O.C.

• Lin Shoou-Shyan

  Solar Applied Material Technology Co., No. 1, Gongye 3rd Rd., Annan District, Tainan, Taiwan 709, R.O.C.

• Hsieh Tsung-Eong

  Department of Material Science and Engineering, National Chiao Tung University, Hsinchu 300, Taiwan

• Mai Hung-Chuan

  Department of Materials Science and Engineering, National Chiao Tung University, 1001 Ta-Hsueh Rd., Hsinchu, Taiwan 300, R.O.C.

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