عيب شوتكي
عيب شوتكي Schottky defect هونوع من العيوب النقطية في عقد بلوري مسمى على اسم والتر شوتكي.
The defect forms when oppositely charged ions leave their lattice sites, creating vacancies. These vacancies are formed in stoichiometric units, to maintain an overall neutral charge in the ionic solid. The vacancies are then free to move about as their own entities. Normally these defects will lead to a decrease in the density of the crystal. The following are the chemical equations in Kröger-Vink Notation for the formation of Schottky defects in TiO2 and BaTiO3.
Ø
Ø
This can be illustrated schematically with a two-dimensional diagram of a sodium chloride crystal lattice:
التعريف
أمثلة
التأثير على الكثافة
انظر أيضاً
- عيب فرنكل
- عيب ويگنر Wigner effect
- العيوب البلورية
المصادر
Kittel, Charles, Introduction to Solid State Physics - 8th ed. Wiley, 2005. ISBN 0-471-41526-X.
وصلات خارجية
نطقب:Condensedmatter-stub
