https://doi.org/10.1051/epjap:1999121
Atomic structure of {112} Σ = 3 twin boundary in β–SiC
Centre de Microcaractérisation, Laboratoire de Physique Cristalline,
Institut des Matériaux de Nantes, B.P. 32229,
44322 Nantes Cedex 3, France
Received:
24
June
1998
Revised:
13
October
1998
Accepted:
5
November
1998
Published online: 15 February 1999
We study the atomic structure of 
twin boundaries consisting of a
stacking of six 
planes and characterized by a resulting Burger vector equal
to zero. The twins were imaged by HRTEM. We develop image processing to localize the
silicon and carbon atoms in each grain and thus to deduce their stacking and to
calculate the possible rotation and translation of one grain with respect to the other
with an accuracy greater than 0.1%. We show that there is no rigid body translation
between the two grains. However, models derived from Möller or Pond et al.
are not suitable. We propose an alternative model which is in close agreement with the
asymmetrical contrast of the twin boundary.
PACS: 61.72.Mm – Grain and twin boundaries
© EDP Sciences, 1999
