Crystallization process of InTe alloy films for optical recording
| Autor: | Chiba Reiichi, Nobuhiro Funakoshi, Susumu Fujimori, Sugiyama Yasuyuki |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Chemistry
business.industry Alloy Activation energy engineering.material Condensed Matter Physics Grain size Electronic Optical and Magnetic Materials law.invention Differential scanning calorimetry Optics Semiconductor law Materials Chemistry Ceramics and Composites engineering Irradiation Thin film Composite material Crystallization business |
| Zdroj: | Journal of Non-Crystalline Solids. 122:83-89 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/0022-3093(90)90229-f |
| Popis: | The crystallization process of sputtered InTe alloy films was studied in detail using a differential scanning calorimeter (DSC) in order to determine if the alloy can be used as a phase-change type optical recording material. The crystallization process is well described by the Johnson-Mehl-Avrami (JMA) equation. In a 50–60 at.% TeIn alloy system, good material characteristics were obtained, that is, a high crystallization temperature above 250°C, a high activation energy of more than 3.0 eV and a frequency factor of more than 10 30 s −1 . The exponent n varied from 1.5 to 3 in these compositions. An incubation time was also observed in the present experiments. In addition to studying these material characteristics, the crystallization speed was estimated with a static write-erase tester using semiconductor laser irradiation. It was found that the incubation time greatly influences high speed crystallization. |
| Databáze: | OpenAIRE |
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