Advantage of pseudo-binary PhaseChange material against eutectic material for application in poor rapid cooling structure

Author

Fargeix, A. ; Hyot, B. ; Rolland, B. ; Poupinet, L. ; Armand, MF ; Anciant, R.

Author_Institution

CEA/LETI/DOPT/LICP, Grenoble, France

fYear

2002

fDate

2002

Firstpage

69

Lastpage

71

Abstract

In PhaseChange (PC) commercial disks, the PC material is used with a thick reflector which also acts as a highly efficient heat sink providing that the stack is well tuned regarding heat flow properties. In this case, growth dominated materials based on the eutectic composition Sb₇₀Te₃₀ are good candidates (Zhou-GF et al, Proc. SPIE vol. 4090, pp. 108-115, 2000). However in some structures where a highly efficient heat sink is no longer possible, GeSbTe-based materials (nucleation dominated behaviour) could show higher potentiality. This situation can be faced in dual level disks for example, as we show here.

Keywords

cooling; digital versatile discs; heat sinks; nucleation; phase transformations; recrystallisation; DVD-RW; GeSbTe; GeSbTe-based materials; PC material; PhaseChange commercial disks; Sb₇₀Te₃₀; Sb₇₀Te₃₀ eutectic composition; dual level disk; efficient heat sink; eutectic material; growth dominated materials; nucleation dominated behaviour; poor rapid cooling structure application; pseudo-binary PhaseChange material; recrystallization process; stack heat flow properties; thick reflector heat sink; Amorphous materials; Composite materials; Cooling; Crystalline materials; Crystallization; Heat sinks; Knee; Optical materials; Phase change materials; Writing;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Memory and Optical Data Storage Topical Meeting, 2002. International Symposium on

Print_ISBN

0-7803-7379-0

Type

conf

DOI

10.1109/OMODS.2002.1028570

Filename

1028570