crystallite
(rus. кристаллит)
— a solid body of micron or submicron size, a three-dimensional periodic lattice of atoms, ions or molecules, bounded by a closed surface; beyond such surface there can be a crystal lattice with altered or impaired orientation, or a gaseous or liquid phase or vacuum.
Description
Crystallites of nanometre size in at least one dimension are called nanocrystallites. A crystallite that is strongly bonded with other crystallites along its borders makes up part of a solid polycrystalline body. A crystallite being a component of ceramics and having distinct borders observed using optical or electron microscopy, is commonly called a grain. The term “coherent scattering range”, having similar meaning, is often used in crystallographic studies.
Illustrations
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Powder crystallites: a) La0,75Na0,25MnO3–d; b) Zn3Nb2O8. Author: Oleg A. Shlyakhtin, Lomonosov Moscow State University. From personal files. |
Authors
- Ivanov Victor V.
- Shlyakhtin Oleg A.