TY - JOUR
T1 - Dissociated 60° dislocations in cdte studied by high-resolution electron microscopy
AU - Lu, Ping
AU - Smith, David
N1 - Funding Information:
ACKNOWLEDGMENTS We are grateful to Dr R. W. Glaisher for initial discussions relating to dislocation structures in semiconductor materials. This work has been supported by National Science Foundation Grant DMR-8514583.
PY - 1990/10
Y1 - 1990/10
N2 - High-resolution electron microscopy has been used to characterize disclo-cations in CdTe which were induced by argon ion-beam milling. The core structures of the 30° and 90° partial dislocations resulting from the dissociation of 60° dislocations have been analysed with assistance from multislice image simulations, and it is found that various structural models (glide set and shuffle set) can be differentiated. Chemical information (tx or P form) about the dislocations can be deduced by first determining the Burgers vectors of the dislocations and the crystal polarity. Experimentally, for a 60° dislocation dissociated with an intrinsic stacking fault, the 30° partial is found to be the glide set, independent of its chemical nature; however, no shuffle set is found. For a 60° dislocation dissociated with an extrinsic stacking fault, the 90° partial is usually kinked and therefore much more difficult to recognize. In one particular example, however, it was found to be the glide set.
AB - High-resolution electron microscopy has been used to characterize disclo-cations in CdTe which were induced by argon ion-beam milling. The core structures of the 30° and 90° partial dislocations resulting from the dissociation of 60° dislocations have been analysed with assistance from multislice image simulations, and it is found that various structural models (glide set and shuffle set) can be differentiated. Chemical information (tx or P form) about the dislocations can be deduced by first determining the Burgers vectors of the dislocations and the crystal polarity. Experimentally, for a 60° dislocation dissociated with an intrinsic stacking fault, the 30° partial is found to be the glide set, independent of its chemical nature; however, no shuffle set is found. For a 60° dislocation dissociated with an extrinsic stacking fault, the 90° partial is usually kinked and therefore much more difficult to recognize. In one particular example, however, it was found to be the glide set.
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U2 - 10.1080/13642819008215245
DO - 10.1080/13642819008215245
M3 - Article
AN - SCOPUS:0025506074
SN - 1364-2812
VL - 62
SP - 435
EP - 450
JO - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
JF - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
IS - 4
ER -