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Updated: Feb 7, 2026

Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries
Published on: April 22, 2013
Strain-Induced Asymmetric Line Segregation at Faceted Si Grain Boundaries
Christian H Liebscher1, Andreas Stoffers1, Masud Alam1
1Max-Planck-Institut für Eisenforschung GmbH, 40237 Düsseldorf, Germany.
Abstract:
The unique combination of atomic-scale composition measurements, employing atom probe tomography, atomic structure determination with picometer resolution by aberration-corrected scanning transmission electron microscopy, and atomistic simulations reveals site-specific linear segregation features at grain boundary facet junctions. More specific, an asymmetric line segregation along one particular type of facet junction core, instead of a homogeneous decoration of the facet planes, is observed. Molecular-statics calculations show that this segregation pattern is a consequence of the interplay between the asymmetric core structure and its corresponding local strain state. Our results contrast with the classical view of a homogeneous decoration of the facet planes and evidence a complex segregation patterning.
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