TY - JOUR
T1 - The mechanism of diamond nucleation from energetic species
AU - Lifshitz, Y.
AU - Köhler, Th
AU - Frauenheim, Th
AU - Guzmann, I.
AU - Hoffman, A.
AU - Zhang, R. Q.
AU - Zhou, X. T.
AU - Lee, S. T.
PY - 2002/8/30
Y1 - 2002/8/30
N2 - A model for diamond nucleation by energetic species (for example, bias-enhanced nucleation) is proposed. It involves spontaneous bulk nucleation of a diamond embryo cluster in a dense, amorphous carbon hydrogenated matrix; stabilization of the cluster by favorable boundary conditions of nucleation sites and hydrogen termination; and ion bombardment-induced growth through a preferential displacement mechanism. The model is substantiated by density functional tight-binding molecular dynamics simulations and an experimental study of the structure of bias-enhanced and ion beam-nucleated films. The model is also applicable to the nucleation of other materials by energetic species, such as cubic boron nitride.
AB - A model for diamond nucleation by energetic species (for example, bias-enhanced nucleation) is proposed. It involves spontaneous bulk nucleation of a diamond embryo cluster in a dense, amorphous carbon hydrogenated matrix; stabilization of the cluster by favorable boundary conditions of nucleation sites and hydrogen termination; and ion bombardment-induced growth through a preferential displacement mechanism. The model is substantiated by density functional tight-binding molecular dynamics simulations and an experimental study of the structure of bias-enhanced and ion beam-nucleated films. The model is also applicable to the nucleation of other materials by energetic species, such as cubic boron nitride.
UR - http://www.scopus.com/inward/record.url?scp=0037200069&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0037200069&origin=recordpage
U2 - 10.1126/science.1074551
DO - 10.1126/science.1074551
M3 - RGC 21 - Publication in refereed journal
C2 - 12202823
SN - 0036-8075
VL - 297
SP - 1531
EP - 1533
JO - Science
JF - Science
IS - 5586
ER -