Short range order

In <a href="/facts/Crystallography/9B5toeqG">crystallography</a>, short range order refers to the regular and predictable arrangement (i.e. <a href="/facts/Crystal/e2R2mk3E">crystalline</a> lattice) of <a href="/facts/Atom/FoQ4kGN5">atoms</a> over a short distance, usually with one or two atom spacings. However, this regularity described by short-range order does not necessarily apply to a larger area. Examples of materials with short range order include <a href="/facts/Amorphous_solid/YTIzmrR0">amorphous materials</a> such as <a href="/facts/Wax/MAXhjzNh">wax</a>, <a href="/facts/Glass/hezRsAGf">glass</a> and <a href="/facts/Liquids/t9GkLWzt">liquids</a> as well as the collagen fibrils of the stroma in the cornea.
Besides ordering of atoms, short-range ordering of <a href="/facts/Vacancy_defect/kDeBLJIT">vacancies</a> are also possible. Example of systems with short-range ordering of oxygen-vacancies include oxygen-deficient stoichiometries of the <a href="/facts/Superconductor/pqQAlSzJ">superconductors</a> YBa2Cu2O7−δ, Nd2−xCexCuO4−y; as well as <a href="/facts/Perovskite/yM9ucFJ2">perovskites</a> and novel bismuth <a href="/facts/Sillenite/79G9xTPP">sillenites</a>.

Short range order open-in-new

Short range order