NDLI: Crystallization kinetics in (AgSbTe)$_{x}$(In$_{1−}$$_{y}$Sb$_{y}$)$_{1−}$$

Content Provider	Springer Nature Link
Author	Mongia, G. Bhatnagar, P. K.
Copyright Year	2006
Abstract	In phase change recording, higher linear densities can be achieved with materials in which crystallization is dominated by growth. AgInSbTe alloy based thin films appear to be the latest promising materials for optical data storage that has drawn worldwide attention. In these films, marks can be written with sharper edges and lower jitter. Films of (AgSbTe)$_{x}$ (In$_{1−}$$_{y}$Sb$_{y}$)$_{1−}$$_{x}$ material with different compositions (x = 0.2, 0.3, 0.4 keeping y = 0.7) were deposited using thermal evaporation technique under a high vacuum of 10$^{−6}$ torr. The results of Differential Scanning Calorimetry (DSC) under non-isothermal conditions with different heating rates (5, 10, 15, 20° K/min) are reported and discussed here. The glass transition temperature T$_{g}$ and the onset crystallization temperature T$_{c}$ were found to be dependent on the composition as well as on the heating rate. The activation energy for glass transition E$_{g}$ and the activation energy for crystallization E$_{c}$ are calculated using Kissinger’s equation and their compositional dependence is discussed. The glass forming ability lies in the range 0.4–0.6.The present investigations indicate that the above-mentioned quaternary material with a typical composition (x = 0.2) is good for phase change optical memory.
Starting Page	2477
Ending Page	2482
Page Count	6
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	41
Issue Number	8
e-ISSN	15734803
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-03-09
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polymer Sciences Materials Science Characterization and Evaluation Materials Mechanics Continuum Mechanics and Mechanics of Materials Crystallography
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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