Definitions for vacancy defect

This page provides all possible meanings and translations of the word vacancy defect

Freebase

  1. Vacancy defect

    In crystallography, a vacancy is a type of point defect in a crystal. Crystals inherently possess imperfections, sometimes referred to as crystalline defects. A defect in which an atom, such as silicon, is missing from one of the lattice sites is known as a 'vacancy' defect. It is also known as a Schottky defect, although in ionic crystals the concepts are not identical. Vacancies occur naturally in all crystalline materials. At any given temperature, up to the melting point of the material, there is an equilibrium concentration. At the melting point of some metals the ratio can be approximately 1:1000. It is the simplest point defect. In this system, an atom is missing from its regular atomic site. Vacancies are formed during solidification due to vibration of atoms, local rearrangement of atoms, plastic deformation and ionic bombardments. The creation of a vacancy can be simply modeled by considering the energy required to break the bonds between an atom inside the crystal and its nearest neighbor atoms. Once that atom is removed from the lattice site, it is put back on the surface of the crystal and some energy is retrieved because new bonds are established with other atoms on the surface. However, there is a net input of energy because there are fewer bonds between surface atoms than between atoms in the interior of the crystal.

Translation

Find a translation for the vacancy defect definition in other languages:

Select another language:

Discuss these vacancy defect definitions with the community:


Citation

Use the citation below to add this definition to your bibliography:

Style:MLAChicagoAPA

"vacancy defect." Definitions.net. STANDS4 LLC, 2014. Web. 1 Oct. 2014. <http://www.definitions.net/definition/vacancy defect>.

Are we missing a good definition for vacancy defect?


The Web's Largest Resource for

Definitions & Translations


A Member Of The STANDS4 Network


Nearby & related entries:

Alternative searches for vacancy defect: