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

Illustrate what is the geocentric, Q. Illustrate What is the geocentric? ...

Q. Illustrate What is the geocentric? Answer:- It is science where the earth is the midpoint of the solar system and the other planets and the sun revolve around the earth

Explain how receiver functions in fibre optic communication, Explain how re...

Explain how receiver functions in fibre optic communication system. Receiver: The optical signal received must be first converted within digital form and in case analog outp

Experiment of a simple inclined plane, A simple inclined plane Join a s...

A simple inclined plane Join a spring balance to a toy car or roller skate and pull it up a slanting board (inclined plane). Note the force needed to move the car and compare i

Magnetic susceptibility and ferromagnetic substances, Magnetic Susceptibili...

Magnetic Susceptibility and Ferromagnetic Substances: Magnetic Susceptibility: The magnetic susceptibility (c) of a substance is defined  as the ratio of the intensity of magn

Rate, What is rate of an assignment question?

What is rate of an assignment question?

State electric field lines in good metallic conductors, Electric field line...

Electric field lines In good metallic conductors: In good metallic conductors:  (i)   Static electric fields are not there (zero inside a conductor) (ii)  Charges reside

Determine the volume of the bubble, As shown in the figure below, a bubble ...

As shown in the figure below, a bubble of gas with a volume of 1.20 cm3 is released under water. As it rises to the surface, the temperature of the bubble enhances from 27°C to

Calculate the required to melt of potassium metal, Calculate the heat requi...

Calculate the heat required to melt 316.7kg of potassium metal at 336 K.   The enthalpy of fusion of potassium is 2.35 kJ mol -1 .

Explain coherence, Define coherence and explain temporal and spatial cohere...

Define coherence and explain temporal and spatial coherence. Show that visibility is a maxim of coherence. Define the 'Q' factor for a spectral line. Explain coherence length and c

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