Abstract
The {111} tetrahedral voids induced by neutron irradiation in 3C-SiC were found to be spatially oriented in only one of two possible directions. The tetrahedral shape was unexpected as the surface-to-volume ratio is larger than the alternative {111} octahedral void common in both metals and ceramics. From a geometric viewpoint, all faces of the observed voids are either Si- or C-terminated surfaces. By comparing the surface area with the octahedral void (composed of the both Si- and C-surfaces) of the same volume, the considerable difference in surface energy between the Si(111) and C (1- 1- 1-) was implicated.
Original language | English |
---|---|
Article number | 163110 |
Journal | Applied Physics Letters |
Volume | 93 |
Issue number | 16 |
DOIs | |
State | Published - 2008 |
Funding
This research was sponsored by the Office of Fusion Energy Sciences, U.S. Department of Energy under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC.