Principle:

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

Tasks:

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 compensation for defect voltage).
2. The voltage across the sample is measured at room temperature and constant control current as a
function of the magnetic induction B.
3. The voltage across the sample is measured at constant control current as a function of the temperature.  The band spacing of germanium is calculated from the measurements.
4. The Hall voltage UH is measured as a function of the magnetic induction B, at room temperature.

The sign of the charge carriers and the Hall constant RH together with the Hall mobility mH and the carrier concentration p are calculated from the measurements.5. The Hall voltage UH is measured
as a function of temperature at constant magnetic induction B and the values are plotted on a
graph.

What you need:

Complete Equipment Set, Manual on CD-ROM included