Atomic structure of symmetric tilt grain boundaries in NiO

K. L. Merkle, David Smith

Research output: Contribution to journalArticlepeer-review

157 Scopus citations


High-resolution electron microscopy shows the coexistence of several distinct core structures for coincident-site lattice boundaries in NiO bicrystals near =5,(310), and =13,(510), where is the reciprocal density of coincident lattice sites. Lattice expansion perpendicular to the =5 grain boundaries is considerably smaller than calculated theoretically. Structural units in boundaries near =13,(510) exhibit translations normal to the grain-boundary plane, resulting in a rumpling of the interface on an atomic scale. Our observations suggest the presence of a high concentration of Schottky pairs in the grain boundaries.

Original languageEnglish (US)
Pages (from-to)2887-2890
Number of pages4
JournalPhysical Review Letters
Issue number25
StatePublished - Jan 1 1987

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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