Dislocation core structures in metals and ceramics are long-standing questions in materials research. Detailed knowledge about core structure of screw dislocations remains a major challenge. We have designed and synthesized a novel HfAl4C4 ceramic with a large c axis and vast difference in atomic numbers, in which a c screw dislocation is directly observed with dislocation line perpendicular to the viewing direction by STEM. This observation has cast a new light on revealing the detailed core structure of screw dislocations.
If you can't find a tool you're looking for, please click the link at the top of the page to "Go to old article view". Alternatively, view our Knowledge Base articles for additional help. Your feedback is important to us, so please let us know if you have comments or ideas for improvement.