crystallographic defect
Sign in to saveAlso known as crystal defect, lattice defect
disruption of the periodicity of a crystal lattice
Wikidata facts
- Subclass of
- crystal structure
Show 4 more facts
- topic's main category
- Category:Crystallographic defects
- Commons category
- Defects in crystals
- different from
- product defect
- characteristic of
- Bravais lattice
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Encyclopedic overview
Electron microscopy of antisites (a, Mo substitutes for S) and vacancies (b, missing S atoms) in a monolayer of molybdenum disulfide. Scale bar: 1 nm.
A crystallographic defect is an interruption of the regular patterns of arrangement of atoms or molecules in crystalline solids. The positions and orientations of particles, which are repeating at fixed distances determined by the unit cell parameters in crystals, exhibit a periodic crystal structure, but this is usually imperfect. Several types of defects are often characterized: point defects, line defects, planar defects, bulk defects. Topological homotopy establishes a mathematical method of characterization.
Excerpted from Wikipedia’s “crystallographic defect” article, available under the CC BY-SA 4.0 licence.