What are the types of interstitial defects?

Imperfections or defects in crystalline solid can be broadly classified into four groups, namely, point defect, line defect, surface defect and volume defect.

What is interstitial impurity defect give an example?

An interstitial impurityA point defect that results when an impurity atom occupies an octahedral hole or a tetrahedral hole in the lattice between atoms. is usually a smaller atom (typically about 45\% smaller than the host) that can fit into the octahedral or tetrahedral holes in the metal lattice (Figure 8.4. 1).

What are the difference between the interstitial and substitutional defect?

In Interstitial defect, atom occupies the interstitial space of the lattice structure of solid crystal. In Substitutional defect, the foreign atom occupies only the lattice site of a crystalline solid. Interstitial defect may occur by the atoms of either same solid (called self-interstitial) or foreign material.

What is the difference between vacancy and interstitial defect?

Vacancy defects are lattice sites which would be occupied in a perfect crystal, but are vacant. Interstitial defects are atoms that occupy a site in the crystal structure at which there is usually not an atom.

What causes interstitial defect?

Interstitial lung disease can be caused by long-term exposure to hazardous materials, such as asbestos. Some types of autoimmune diseases, such as rheumatoid arthritis, also can cause interstitial lung disease. In some cases, however, the causes remain unknown. Once lung scarring occurs, it’s generally irreversible.

What does the term interstitial mean?

Medical Definition of interstitial 1 : situated within but not restricted to or characteristic of a particular organ or tissue —used especially of fibrous tissue. 2 : affecting the interstitial tissues of an organ or part interstitial hepatitis.

What do interstitial impurities do?

Impurity interstitials can be used e.g. for storage of hydrogen in metals. The amorphization of semiconductors such as silicon during ion irradiation is often explained by the build up of a high concentration of interstitials leading eventually to the collapse of the lattice as it becomes unstable.

What is interstitial defect class 12?

Interstitial defect:- When some extra constituent particles are present in the interstitial site the crystal is said to be have interstitial defect. This defect increases density of the crystal. These above types of defects are shown only by non – ionic solids.

What are substitutional defects?

Substitutional Defect occurs when the original atom in the lattice site of a crystalline solid is replaced by a different type of atom. Depending on the size of the substituted foreign atom, the neighboring atoms may remain either in tension or in compression. Substitutional Atom is a Point Defect.

Is interstitial defect Frenkel defect?

Frenkel pair defect is a point defect consisting of a vacancy and interstitial defect pair. It is formed when a lattice ion is displaced from its site, forming a vacancy, and the displaced ion comes to rest at an unoccupied lattice site or interstitial site.

Is Frenkel defect same as interstitial defect?

Due to the Frenkel defect, the lattice energy and stability of crystalline solid decreases. This defect influences the chemical properties of ionic compounds. Entropy of the solid increases.

What does the medical term interstitial mean?