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Nano Lett. 2010 Aug 11;10(8):2794-8. doi: 10.1021/nl100670r.

Embedded binary eutectic alloy nanostructures: a new class of phase change materials.

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  • 1Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA.

Abstract

Phase change materials are essential to a number of technologies ranging from optical data storage to energy storage and transport applications. This widespread interest has given rise to a substantial effort to develop bulk phase change materials well suited for desired applications. Here, we suggest a novel and complementary approach, the use of binary eutectic alloy nanoparticles embedded within a matrix. Using GeSn nanoparticles embedded in silica as an example, we establish that the presence of a nanoparticle/matrix interface enables one to stabilize both nanobicrystal and homogeneous alloy morphologies. Further, the kinetics of switching between the two morphologies can be tuned simply by altering the composition.

PMID:
20698591
[PubMed]
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