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Large melting-point hysteresis of Ge nanocrystals embedded in SiO2.

Authors :
Xu Q
Sharp ID
Yuan CW
Yi DO
Liao CY
Glaeser AM
Minor AM
Beeman JW
Ridgway MC
Kluth P
Ager JW 3rd
Chrzan DC
Haller EE
Source :
Physical review letters [Phys Rev Lett] 2006 Oct 13; Vol. 97 (15), pp. 155701. Date of Electronic Publication: 2006 Oct 09.
Publication Year :
2006

Abstract

The melting behavior of Ge nanocrystals embedded within SiO2 is evaluated using in situ transmission electron microscopy. The observed melting-point hysteresis is large (+/-17%) and nearly symmetric about the bulk melting point. This hysteresis is modeled successfully using classical nucleation theory without the need to invoke epitaxy.

Details

Language :
English
ISSN :
0031-9007
Volume :
97
Issue :
15
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
17155336
Full Text :
https://doi.org/10.1103/PhysRevLett.97.155701