TITLE

Direct observation of the birth of a nanocrystalline nucleus in an amorphous matrix

AUTHOR(S)
Rauf, Ijaz A.
PUB. DATE
October 2008
SOURCE
Applied Physics Letters;10/6/2008, Vol. 93 Issue 14, p143101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Nucleation of crystals within an amorphous phase can be induced using electron beam irradiation in an electron microscope. In contrast to generally believed two-step phase transformation involving nucleation and growth, we observe a three-step transformation: a two-step nucleation stage followed by the growth process. The two steps in the nucleation stage are: the formation of a basic crystalline skeleton followed by the diffusion of excess defects to the periphery of the crystalline skeleton.
ACCESSION #
34850495

 

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