Alloying, Physics

Assignment Help:

Alloying: When an impurity atom of a different size compared to the host atom is placed into the crystal lattice, the impurity atom distorts the resin around it, either by pushing the host atoms farther away, or by pulling them in, as depicted. The cross section that scatters the electron is the lattice region that has been elasticity distorted by the impurity (the impurity atom itself and its neighbouring host atoms), so that in this zone, the electron suddenly experiences a force due to sudden change in PE. This region has a large scattering event from impurity only. We define τt as the mean time between scattering events arising from thermal vibrations alone and as the mean time between scatterings events arising from collisions with impurity alone. In, general an electron may be scattered by both processes, so effective mean time τ between any which scattering events will be less than the individual scattering time. 

 

 


Related Discussions:- Alloying

Units and dimensions, what is the dimension and unit of bulk modulus,stress...

what is the dimension and unit of bulk modulus,stress,strain and moment of interia

Whta is mach number , Mach number is the ratio of velocity of source to the...

Mach number is the ratio of velocity of source to the velocity of sound.        Mach Number = Velocity of Source / Velocity of Sound  .

Draw a ray diagram to show the formation of image, Draw a ray diagram to sh...

Draw a ray diagram to show the formation of image of an object placed among the optical centre and focus of the convex lens. Write the characteristics of image formed. Using this d

Special resistor materials: carbon, Carbon: Atomic number ...

Carbon: Atomic number 6 Symbol C Atomic weight 12.011 Discovery Carbon exists fre

Define electromotive force, Electromotive force EMF (ξ) - This is the elec...

Electromotive force EMF (ξ) - This is the electrical energy from an ideal battery with no internal resistance.  It is also the open circuit value of a battery (no current is drawn

Atomic structure, Atoms are particles of elements, substances that could no...

Atoms are particles of elements, substances that could not break down further. In examining atomic structure through, we have to clarify this statement. An atom cannot be broken do

Explain sliding versus static friction, Sliding versus Static Friction: ...

Sliding versus Static Friction: Friction force is the force exert by a surface as an object moves crosswise it or makes an effort to move across it. Two types of friction force

Types of printed circuit boards, There are two most popular types of PCB as...

There are two most popular types of PCB as under:- (a)       SINGLE SIDED PCB (b)       DOUBLE SIDED PCB (c)       MULTI LAYERED P

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd