What is the Hall coefficient of germanium?
The Hall coefficient, and the density of free carriers for germanium has been previously found to be –8*10-2 m3/C,4 and 1.0*1021 electrons/m3 respectively6.
Which type of semiconductor has negative Hall effect?
In the n-type semiconductor, the electric field is primarily produced due to the negatively charged free electrons. So the hall voltage produced in the n-type semiconductor is negative.
Is Hall effect applicable to semiconductors?
When a magnetic field is applied perpendicular to the direction of flow of charge carriers, in a semiconductor material, charge carriers experience a force in transverse to the direction of applied magnetic field and carriers flow. This effect is known as Hall effect.
Which semiconductor material is suitable for Hall effect sensor?
Hall Effect Sensor Principles Hall Effect Sensors consist basically of a thin piece of rectangular p-type semiconductor material such as gallium arsenide (GaAs), indium antimonide (InSb) or indium arsenide (InAs) passing a continuous current through itself.
What are the factors affecting Hall coefficient?
The Hall coefficient and its sign in turn depend on the charge carrier density and the type of charge carriers. In a doped semiconductor, either negatively charged electrons or positively charged “holes”, ie missing electrons, can be responsible for a current flow.
Why are Hall coefficients negative in metals?
A negative sign for the Hall coefficient indicates that the majority carriers are electrons and the semiconductor is N-type. It cannot be used to find a magnetic field.
Which of the following is correct about Hall effect in electronic circuits?
Explanation: In Hall Effect, the electric field is perpendicular to both current and magnetic field so that the force due to magnetic field can be balanced by the electric field or vice versa.
Do metals Show Hall effect?
The Hall effect exists in metals, where the low resistance to electrical current would make Joule heating be negligible5.
Can Hall effect be observed in conductors & insulators?
In most conductors, such as metals, the Hall effect is very small because the density of conduction in electrons is very large and the drift speed (charged particle erraticism) is extremely small, even for the highest obtainable current densities.
Which material shows stronger Hall effect metallic conductors or semiconductors?
As conductivity is inversely proportional to Hall Voltage ,and we know that semiconductors have lesser conductivity than metals . So, semiconductors show high hall voltage as compared to metals . thereby showing stronger Hall effect !
Does metals show Hall effect?