Enhanced thermal efficiency for amorphization in nano-structured Ge2Sb2Te5-TiOx films

Title
Enhanced thermal efficiency for amorphization in nano-structured Ge2Sb2Te5-TiOx films
Authors
이동복강동민권민호전현구김기범여호기이현석정병기
Keywords
Ge2Sb2Te5; Ge2Sb2Te5-TiOx; amorphization; laser melting; *2009년도 개인평가에 반영되었음
Issue Date
2010-01
Publisher
Current applied physics
Citation
VOL 10, NO 1, e83-e86
Abstract
The dynamics of the melt-quenched amorphization in TiOx mixed Ge2Sb2Te5 films were studied using real-time reflectivity measurements with a nanosecond laser pulse and various amounts of TiOx. It was observed that the laser-power required for amorphization was significantly reduced by 27 % when 9.1 mol % of TiOx was incorporated with Ge2Sb2Te5.The lowering of the thermal conductivity of the films, due to the increase in the number of interface between the Ge2Sb2Te5 and TiOx phases, led to an increase in the thermal efficiency. Such enhanced thermal efficiency is of great technological importance in phase change storage applications.
URI
http://pubs.kist.re.kr/handle/201004/36742
ISSN
1567-1739
Appears in Collections:
KIST Publication > Article
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