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What is the difference between vacancy and self interstitial crystalline defects?
Wiki User
∙ 12y ago
the simplest of the point defects is a vacancy or vacant lattice site ,one normally occupied from which atom is missing is called vacancy
a self-interstitial is an atom from a crystal that is crowded into an interstitial site , a small void space that under ordinary circumstances is not occupied.
Wiki User
∙ 12y ago
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Why AgBr shows both frenkel and schotky defect?
When the both the cations and anions are absent from the crystal lattice it is called Schottky defect. This defect is shown when the anions and cations have comparable size. The Frenkel defect is shown by ionic molecules when their is a large difference in the size of anions and cations. The smaller anions are very much mobile and they occupy interstitial site. AgBr has cations and anions with comparable size and hence it shows Schottky defect but the Ag+ ion is very much mobile and it easily occupies interstitial place getting dislocated from its original place, that's why the ionic crystal AgBr shows both Schottky and Frenkel defects.
Why does AgBr show both Frenkel and Schottky defects?
The radius ratio for AgBr is intermediate. Thus it shows both frenkel and schottky defects. The major defect in AgBr is the Frenkel defect. It has a rocksalt structure i.e. CCP lattice of of Br with atoms of Ag occupying all octahedral holes.Ag moves from octahedral to tetrahedral sites causing only cations to precipitate. Schottky defect arise due to missing of ions from their lacttice point and frenkel arise when the mmissing ions occupy interstitial sites. in AgBr, ag+ ion is small in size and when removed from lacttice point they can occupy interstitial site and therefore show both frenkel and schottky defect. SCHOTTKY Defect in AgBr is exhibited due to precipitation of both Cations and Anions.
Why are crystals not Perfect?
A mineral is always made up of crystals, but if the crystals are very small the mineral will not appear crystalline to the naked eye. A good example of this is quartz. Almost everyone is familiar with the colorless, transparent, 6 sided quartz crystal. But quartz also forms veins inside other rocks which don't appear crystalline at all. The quartz in the vein is still crystalline, it is just that the crystals are very, very small, because they formed too quickly to grow large enough to be visible to the naked eye.
What happens if you do not get enough of folic acid?
Folate deficiency may lead to glossitis, diarrhea, depression, confusion, anemia, and fetal neural tube defects and brain defects (during pregnancy).
Why are there different color diamonds?
From Wikipedia: "The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice." You can read more about what impurities and defects cause which colours, below.
What is the Difference between hereditary and environmental defects?
Hereditary defects are passed down through genes from one generation to the next, while environmental defects are caused by factors in the external environment such as exposure to toxins, radiation, or infections. Hereditary defects are usually present at birth and can affect multiple family members, while environmental defects may develop later in life due to specific environmental exposures.
What is the difference between defect detection and defect prevention?
The defects detection is the validation process. The defects prevention is a verification process.
Why defects in crystals are called thermodynamic defects?
crystalline defets are present in a crystal due to the presence of impurities.
What is the difference between Tig weld vs plasma weld?
When we are using the tig welder we getting welding defects on our blanks, but when using the plasma weld no defects are found
What is quantitative techniques in manangement?
Consider the difference between quantity and quality to derive the answer. For example, quantitative quality control would measure the number of defects. Qualitative quality control would evaluate the character of defects.
Do black people have birth marks?
Yes; all human bodies are subject to the same kinds of defects. The only real difference between blacks and (say) whites is the pigmentation of the skin. Normally, too, the skeletal structure possesses certain difference of feature. These, however, are not "defects" as such.
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hearts with septal defects (holes between pumping chambers)
Explain the relationship between learning disabilities and deviant behavior?
Learning disabilites are different kind of brain "defects" Deviant behavior is knowing the difference between right and wrong, just not caring.
Do factory defects in hot wheels make much of a difference in value?
Yes
What has the author S J Pearton written?
S. J. Pearton has written: 'Hydrogen in crystalline semiconductors' -- subject(s): Semiconductors, Complex compounds, Hydrogen, Defects 'InP HBTs'
What are the differences between the Frenkel and Schottky defects?
A Schottky defect is when 2 oppositely charged ions leave their normal lattice positions forming 2 vacancies in the lattice structure. This contrasts to a Frenkel defect, where 1 ion simple moves from it's normal lattice position to an interstitial site (tetrahedral/octahedral hole).
What are the differences between natural and artificial defects in timber?
Natural defect are caused naturally,while artificial defects are caused by human activities
