Model No:MREX-01
The magnetoresistance is defined as the ratio of change in resistance of a substance due to application of magnetic field to its resistance in zero field. Under the influence of a magnetic field, the electrons in a solid material do not follow the exact direction of superimposed electric field, instead take a curved path. This results in effective decrease of the mean free path and hence an increase in the resistivity of the sample. When magnetic field is applied normal to the current flow, the effect is termed as transverse magnetoresistance and when field is applied parallel to the current flow, it is termed as longitudinal magnetoresistance.
This results in effective decrease of the mean free path and hence an increase in the resistivity of the sample. When magnetic field is applied normal to the current flow, the effect is termed as transverse magnetoresistance and when field is applied parallel to the current flow, it is termed as longitudinal magnetoresistance.
Setup Consists of the following:
Scope of Learning:
Technical Specifications:
Magneto Resistance Meter
Gauss Range : 0-20 KG
Sensor : InAs
Voltage : 200mV
Current Supply : 20mA (max)
Probe
Crystal : p-type
Resistivity : As on Probe
Thickness : As on Probe
Electromagnet Power supply
Voltage : 0-60V DC
Current : 6A Max
Safety : Fuse 5A
Electromagnet
