Hall Effect Experiment

 

The aim of the experiment

Experiment with the tools

Steps to conduct the experiment

(Task 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). 

-Set the magnetic field to a value of 250 mT by changing the voltage and current on 

the power supply. 

-Connect the multimeter to the sockets of the hall voltage (UH) on the front-side of 

the module.

- Set the display on the module into the ”current-mode 

- Determine the hall voltage as a function of the current from -30 mA up to 30 mA in 

steps of nearly 5 mA.

(Task 2)

The voltage across the sample is measured at room temperature and constant 

control current as a function of the magnetic induction B. 

  -Set the control current to 30 mA 

 -Connect the multimeter to the sockets of the sample voltage on the front-side of the 

module. 

-Determine the sample voltage as a function of the positive magnetic induction B up 

to 300 mT.

(Task 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. 

-Be sure, that the display works in the temperature mode during the measurement. 

-At the beginning, set the current to a value of 30 mA. 

-The magnetic field is off. 

-The current remains nearly constant during the measurement, but the voltage. 

changes according to a change in temperature.

-Set the display in the temperature mode, now. Start the measurement by activating. 

the heating coil with the ”on/off”-knob on the backside of the module. 

-Determine the change in voltage dependent on the change in temperature for a. 

temperature range of room temperature to a maximum of 140°C. 

(Task 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 μH and the carrier concentration p are calculated from the 

measurements. 

-Set the current to a value of 30 mA 

-Connect the multimeter to the sockets of the hall voltage (UH) on the front-side of 

the module. 

-Determine the Hall voltage as a function of the magnetic induction 

-Start with -300 mT by changing the polarity of the coil-current and increase the 

magnetic induction in steps of nearly 20 mT. At zero point, you have to change the 

polarity.

(Task 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.

-Set the current to 30 mA and the magnetic induction to 300 mT 

-Determine the Hall voltage as a function of the temperature 

-Set the display in the temperature mode 

-Start the measurement by activating the heating coil with the ”on/off”- knob on the 

backside of the module.

Simulation