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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.
Vacancy defects are missing atoms within a crystal lattice, while self-interstitial defects are extra atoms that occupy interstitial spaces within the lattice. Vacancies result in a decrease in density, while self-interstitials increase density. Both types of defects can affect the material's mechanical and electrical properties.
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How might the impurities be incorporated into the crystal structure of a material?
Impurities can be incorporated into a crystal structure through a process called doping, where foreign atoms are intentionally added during crystal growth. These impurities can occupy lattice sites, forming substitutional defects, or they can be present in between lattice sites, creating interstitial defects. Doping can alter the electronic and optical properties of the material, making it useful for various applications.
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.
What is ionic defect?
Ionic defects are structural imperfections in a crystal lattice that result from the presence of missing or extra ions in the lattice. These defects can affect the material's properties, such as electrical conductivity or optical behavior, by influencing the movement of ions within the lattice. Examples of ionic defects include vacancies, interstitial ions, and substitutional impurities.
Why AgBr shows both frenkel and schotky defect?
AgBr can exhibit both Frenkel and Schottky defects due to the relative size difference between the cation (Ag+) and anion (Br-) in the crystal lattice. The smaller Ag+ cation can easily migrate to a vacant cation site through a Frenkel defect, while the creation of cation and anion vacancies simultaneously forming a Schottky defect is also feasible due to the ionic nature of the compound.
What is difference between melt through and burn through in welding defects?
In welding, "melt through" occurs when excessive heat causes the base metal to be penetrated, resulting in a hole. "Burn through" happens when the heat is so intense that the molten metal actually burns away portions of the base metal, leading to thinning or complete loss of material. Both defects can weaken the weld joint and compromise its integrity.
What is the difference between defect detection and defect prevention?
The defects detection is the validation process. The defects prevention is a verification process.
What are the differences between the Frenkel and Schottky defects?
Frenkel defects involve the migration of an atom from its original lattice site to an interstitial site, whereas Schottky defects are related to the simultaneous creation of vacancies in the crystal lattice. Frenkel defects are common in compound semiconductors, while Schottky defects are more prevalent in ionic solids like metal halides.
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 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.
Why defects in crystals are called thermodynamic defects?
Defects in crystals are called thermodynamic defects because they influence the overall energy or thermodynamic properties of the crystal lattice. These defects can affect the stability, entropy, and other thermodynamic properties of the crystal structure. They are considered in the context of thermodynamics as they impact the equilibrium state and behavior of the crystal material.
What are septal defects?
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.
How might the impurities be incorporated into the crystal structure of a material?
Impurities can be incorporated into a crystal structure through a process called doping, where foreign atoms are intentionally added during crystal growth. These impurities can occupy lattice sites, forming substitutional defects, or they can be present in between lattice sites, creating interstitial defects. Doping can alter the electronic and optical properties of the material, making it useful for various applications.
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.
Do factory defects in hot wheels make much of a difference in value?
Yes
