Atomic structure of a Σ = 21 grain boundary

An electron microscope structure image of a Σ = 21/[111] tilt grain boundary in Au was obtained and atomic column positions identified to yield a structural unit model of the interface consisting of repeating polyhedron shapes. This result represents the smallest projected spacings at a grain boundary containing defect structures imaged by an electron microscope and interpreted atomistically. © 1990, Materials Research Society. All rights reserved.