TY - JOUR
T1 - Investigation of dislocation mobilities in germanium in the low-temperature range by in situ straining experiments
AU - Louchet, F.
AU - Cochet Muchy, D.
AU - Brechet, Y.
AU - Pelissier, J.
PY - 1988/2
Y1 - 1988/2
N2 - The mobility of screw and 60° dislocations in thin, single-crystal foils of germanium has been studied by in situ tensile testing in a high-voltage electron microscope operating at 400 kV, at stresses around 40 MPa and temperatures around 400°C. The velocity of the dislocations was found to depend strongly on their length, and this is discussed in terms of a double-kink mechanism with a high lattice friction on kinks. Activation energies for kink formation and migration are deduced from fits of the velocity–length curves, and discussed in terms of core structures of partial dislocations.
AB - The mobility of screw and 60° dislocations in thin, single-crystal foils of germanium has been studied by in situ tensile testing in a high-voltage electron microscope operating at 400 kV, at stresses around 40 MPa and temperatures around 400°C. The velocity of the dislocations was found to depend strongly on their length, and this is discussed in terms of a double-kink mechanism with a high lattice friction on kinks. Activation energies for kink formation and migration are deduced from fits of the velocity–length curves, and discussed in terms of core structures of partial dislocations.
UR - http://www.scopus.com/inward/record.url?scp=0023961648&partnerID=8YFLogxK
U2 - 10.1080/01418618808204518
DO - 10.1080/01418618808204518
M3 - Article
AN - SCOPUS:0023961648
SN - 0141-8610
VL - 57
SP - 327
EP - 335
JO - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
JF - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
IS - 2
ER -