Compositional defects, Other Engineering

Assignment Help:

Q. Explain the compositional defects.

Ans. Compositional Defect: This defect due to

(a)    Alloying an element to original crystal.

(b)   Impuring atom during original crystallization.

These defects are responsible for functioning of most semiconductor devices.

A substitutional impurity defect is also a point defect in which a foreign atoms that substitutes for a parent atom in the crystal lattice e.g. in bras, zinc is a substitutional atom in the copper.

A interstitial impurity is a small sized atom occupying space between the regularity positioned atoms.


Related Discussions:- Compositional defects

Carrer, i want to do aeronautics engg. but my height is only five feet . so...

i want to do aeronautics engg. but my height is only five feet . so can i go in aeronautics

Auxiliary power unit oil system, Auxiliary power unit oil System: A sum...

Auxiliary power unit oil System: A sump at the bottom of the gearbox collects the returning oil, in some APU's the rear face of the sump is finned and let into the intake plenu

Evaporation, 2-17 Given a wind speed of 5.0 m/s at 2 m above the ground and...

2-17 Given a wind speed of 5.0 m/s at 2 m above the ground and a roughness length of 0.8 cm, compute (a) the friction velocity, in centimeters per second, and (b) the wind speed, i

Oil pressure warning light in aircraft, Oil pressure warning light: Oil...

Oil pressure warning light: Oil pressure is also monitored by an oil pressure switch that puts a light on when the oil pressure reaches a low level. The light is usually red an

Adders and subtractors, Adders & Subtractors Adder and Subtractor circui...

Adders & Subtractors Adder and Subtractor circuits are used to perform basic calculations in computer systems. Adders, as their name suggests, add binary digits. Since binary

Depreciation Tax Calculation, Depreciation Calculation Two most popular me...

Depreciation Calculation Two most popular methods of charging depreciation are: straight line and diminishing balance or written-down value (WDV) methods. For reporting to the sha

Reduced bearings, Convert the following reduced bearings to whole circle be...

Convert the following reduced bearings to whole circle bearings: N.36°16’E; (b) S.28° 14’ E. (c) S.47°26’W and (d) N.58°24’W

Couplings in engine, Couplings: Because of the requirement to make main...

Couplings: Because of the requirement to make maintenance tasks such as engine removal/refit, gearbox removal/refit easier, it is necessary to have a means of coupling the turb

Question for wator resources engineering, Compute the motor size required t...

Compute the motor size required to pump 28.3 cms through a 3,050 m long, 3.66 m diameter pipeline to an upper reservoir 610 m above the lower reservoir. Use a friction facter of 0.

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