TY - JOUR
T1 - On the Dislocation Properties of 60$^{\circ}$ Partial Dislocation in Silver: Core Structure and Peierls Stress
AU - Shao-Rong Li, Shao-Feng Wang, Qun-Yi Wei & Xiao-Zhi Wu
JO - Journal of Atomic and Molecular Sciences
VL - 2
SP - 162
EP - 171
PY - 2010
DA - 2010/01
SN - 1
DO - http://doi.org/10.4208/jams.110709.112809a
UR - https://global-sci.org/intro/article_detail/jams/8077.html
KW - core structure, partial dislocation, variational method, Peierls stress.
AB - <p style="text-align: justify;">Two-dimensional modified Peierls-Nabarro dislocation equation
concerning the discreteness of crystals is reduced to
one-dimensional equation to determined the core
structure of partial dislocation in Ag. The generalized stacking
fault energy along the Burgers vectors of partial dislocation is a
skewed sinusoidal force law, which is related to the intrinsic
stacking fault energy and the unstable stacking fault energy. A
trial solution appropriate for arbitrary dislocation angle is
presented within the variational method. The results show that the
half core width increases as the increase of dislocation angle.
Moreover, the core width decreases with the increase of the unstable
stacking fault energy and the intrinsic stacking fault energy.
Peierls stress for $60^{\circ}$ partial dislocation is in
agreement with the experimental results.</p>