Measurement of Magneto Resistance of Semiconductor

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Measurement of Magneto Resistance of Semiconductor

Order Code: 55871

55871 Experimental Set-Up has been designed specifically for the measurement of magnetoresistance of semiconductor. The resistance of a semiconductor changes according to strength of the magnetic field. The set up is complete in all respect and re...

SPECIFICATION

The set up is complete in all respect and requires no other apparatus. Practical experience on this set up carries great educative value for Science and Engineering Students.

OBJECT

Measurement of magneto resistance of semiconductor by employing four probe technique

FEATURES

The Complete Experimental Set-up consists of following items:

Four Probe Arrangement : It consists of 4 collinear, equally spaced (2mm) and individually spring loaded probes mounted on a PCB strip. Two outer probes for suppling the constant current to the sample and two inner probes for measuring the voltage developed across these probes.
Sample Ge Crystal (N-type) Dimmension :10 x 10 x 0.5 mm
Measurement of Magneto resistance o f Semiconductor: It consists of a digital meter to read Hall voltage (0-200mV) and probe current (0-20mA) selectable by a switch .It also provide constant current power supply. Variation in current is achieved by a potentiometer provided.
- SPECIFICATIONS AMMETER VOLTMETER
- Range : 0-20 mA 0-200mV
- Resolution : 10 uA 0.1mV
Electromagnet :
- The electromagnet have the most widely used ‘U’ shaped soft iron yoke. The soft iron is of a special quality, structurally uniform, well machined and finished to meet the rigid standards.
- SPECIFICATIONS
- Field intensity : 7.5 KG at 10mm air-gap which flat pole pieces Pole pieces: 50mm diameter
- Energising coils : Two, each a resistance of about 3.0 ohms
- Power requirement : 0-30V DC, 4A, its coils are connected in series