What is the principle of Hall effect experiment?

Principle of Hall Effect. The principle of Hall Effect states that when a current-carrying conductor or a semiconductor is introduced to a perpendicular magnetic field, a voltage can be measured at the right angle to the current path. This effect of obtaining a measurable voltage is known as the Hall Effect.

What is the Hall effect phenomenon?

Hall effect, development of a transverse electric field in a solid material when it carries an electric current and is placed in a magnetic field that is perpendicular to the current. This phenomenon was discovered in 1879 by the U.S. physicist Edwin Herbert Hall.

What did the Hall effect prove?

Historically, the Hall effect was used to show that electrons carry current in metals and it also shows that positive charges carry current in some semiconductors. The Hall effect is used today as a research tool to probe the movement of charges, their drift velocities and densities, and so on, in materials.

How is the Hall effect measured in p-germanium?

1. The Hall voltage is measured at room temperature and constant magnetic field as a function of the control current and plotted on a graph (measurement without compensa- tion for defect voltage). 2. The voltage across the sample is measured at room tem- perature and constant control current as a function of the magnetic induction B. 3.

How are resistivity and Hall voltage of germanium measured?

The resistivity and Hall voltage of a rectangular germanium sample are measured as a function of temperature and mag- netic field. The band spacing, the specific conductivity, the type of charge carrier and the mobility of the charge carriers are determined from the measurements. Equipment

How is the bandgap of a germanium sample determined?

1. The bandgap of an undoped sample of germanium will be determined from – the conductivity of the sample as a function of temperature. 2. The Hall voltage of both p-type and n-type germanium samples are measured as a function of the current through the sample, magnetic field and temperature. Theory

What is the literary value of doped germanium?

This is in agreement with and very close to the literary value of 0.67 eV. The Hall coefficients of n-type and p-type doped germanium samples were measured and found to be (respe ) and ( ) ctively.