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What is Frenkel defect? give an examples? and What is a semi conductor? give an examples?

What is Frenkel defect? give an examples?
and
What is a semi conductor? give an examples?
 
 

Grade:12

4 Answers

vamshi
199 Points
5 years ago
 The defect arises when some of the ions of the lattice occupy interstitial sites leaving lattice
sites vacant is known as Frenkel defect. This defect is generally found in ionic crystals where anion is much larger in size than the cation.
E.g. AgBr, ZnS etc.
  Due to this defect density does not change.
 
The solids having conductivities in the intermediate range from 10-6 to 104 ohm-1 m-1 is
called Semiconductors. The conductivity of a semi conductor increases with rise in the temperature
because electrons from the valence band jump to conduction band.
E.g.; Silicon, Germanium.
 
 
SAI SARDAR
1700 Points
5 years ago
The Frenkel defect is a type of defect shown by crystalline solids. It consists in the displacement of an atom from its lattice position to an interstitial site, creating a vacancy at the original site and an interstitial defect at the new location.
example: ZnS,AgBr.
semi conductor : A semiconductor is a substance, usually a solid chemical element or compound, that can conduct electricity under some conditions but not others, making it a good medium for the control of electrical current.
example : Si,Ge.
T.kumar
281 Points
5 years ago
hi bollu srinivas . 
The Frenkel defect is a type of defect shown by crystalline solids. It consists in the displacement of an atom from its lattice position to an interstitial site, creating a vacancy at the original site and an interstitial defect at the new location.
example: ZnS,AgBr.
semi conductor : A semiconductor is a substance, usually a solid chemical element or compound, that can conduct electricity under some conditions but not others, making it a good medium for the control of electrical current.
example : Si,Ge.
SAI SARDAR
1700 Points
5 years ago
Srinivas, The Frenkel Defect is a defect in the lattice crystal where an atom or ion occupies a normally vacant site other than its own.

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