Solidification of highly undercolled Si and Ge droplets

Published on Jan 1, 1990in Acta Metallurgica
P.V. Evans3
Estimated H-index: 3
,
Genevieve Devaud10
Estimated H-index: 10
+ 1 AuthorsYeon-Wook Kim5
Estimated H-index: 5
Abstract
Nous examinons la formation de phases amorphe et cristallisee dans ces spheres. L'analyse des resultats obtenus par diffraction electronique revele que les spheres les plus petites sont amorphes, avec un reseau desordonne covalent a coordination tetraedrique, et qu'ils ne constituent pas une structure polycristalline a grains tres fins ou une structure de liquide metallique a configuration gelee. On analyse la formation de phases semi-conductrices amorphes et cristallisees par la theorie de la germination competitive classique
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