5 Questions
What is a vacancy in the context of lattice defects?
An atom missing from a regular lattice position
What is an interstitialcy in the context of lattice defects?
An atom trapped in the interstitial point
Which type of defect occurs when an anion is displaced from a regular site to another site?
Frenkel defect
What characterizes a Schottky defect in a crystal lattice?
A pair of cation and anion missing
What is a dislocation in the context of lattice defects?
The region of localized lattice distortion which separates the slipped and unslipped portion of the crystal
Study Notes
Lattice Defects
- A vacancy is a type of lattice defect where an atom or ion is missing from its regular lattice site.
- An interstitialcy is a type of lattice defect where an atom or ion occupies a position between regular lattice sites.
- A Frenkel defect occurs when an anion is displaced from a regular site to an interstitial site, resulting in a vacancy and an interstitialcy.
Schottky Defects
- A Schottky defect is characterized by a pair of vacancies, one of each type of ion (anion and cation), which maintain the electrical neutrality of the crystal lattice.
Dislocations
- A dislocation is a type of lattice defect that occurs when there is a linear defect in the crystal lattice, resulting in a disruption of the regular arrangement of atoms or ions.
Test your knowledge of lattice defects with this quiz. Learn about point defects, including vacancies and interstitialcies, as well as other types of defects like line, surface, and volume defects.
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