Imperfect oriented attachment: Dislocation generation in defect-free nanocrystals

R. Lee Penn, Jillian F. Banfield

Research output: Contribution to journalArticlepeer-review

2028 Scopus citations

Abstract

Dislocations are common defects in solids, yet all crystals begin as dislocation-free nuclei. The mechanisms by which dislocations form during early growth are poorly understood. When nanocrystalline materials grow by oriented attachment at crystallographically specific surfaces and there is a small misorientation at the interface, dislocations result. Spiral growth at two or more closely spaced screw dislocations provides a mechanism for generating complex polytypic and polymorphic structures. These results are of fundamental importance to understanding crystal growth.

Original languageEnglish (US)
Pages (from-to)969-971
Number of pages3
JournalScience
Volume281
Issue number5379
DOIs
StatePublished - Aug 14 1998

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