TMXPERT HALL EFFECT

Fully integrated software controlling instruments for Hall Effect

The TMXpert Hall Effect controls the temperature, magnetic field and sample excitation using force current method during measurement. The software enables the user to define and save specifications/configurations. It produces real-time data in tabular and graphical format. User can define a Van Der Pauw sample type for testing through parameters such as thickness and length.

Measurement of rectangular shaped sheet resistance

The Van Der Pauw resistance measurement technique is capable of measuring sheet resistance for any rectangular shaped thin sheet resistance. This technique requires measurement to be performed eight times. This can be realized by using a combination of Keithley switches, SMU and DMM (or equivalent). For instance, the SMU will source current from pin 1 to pin 2, while the DMM measures voltage from pin 4 to pin 3. The switch is used to change the configuration of the current source and voltage measure.

Hall Effect Measurement

IV curve, Voltage (V), resistance (Ω), conductance (S), Power (W) IV curve, Magneto voltage (V), resistance (Ω), conductance (S), Power (W) Voltage ratio (Qa and Qb), Geometry Factor (Fa and Fb), Power (Pa, Pb and Pav) Hall Voltage (V) Sheet Carrier Density (1/cm2) Bulk Carrier Density (1/cm3) Hall Coefficient (cm3/C) Hall Mobility cm2/Vs Carrier Density C/cm3 Hall Resistance (Ω)