Title :
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
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;
Conference_Titel :
Optical Memory and Optical Data Storage Topical Meeting, 2002. International Symposium on
Print_ISBN :
0-7803-7379-0
DOI :
10.1109/OMODS.2002.1028570
