Hall Effect in Metals (HEM-01)
Hall Voltage in silver indicates negative charge carriers, which, Hall Voltage to have about same magnitude but opposite direction as in silver, When the atoms come close together to form the solid, the.
carried out under identical conditions for tungsten show the Hall Voltage to have about same magnitude but opposite direction as in silver. This can be explained by the ‘Energy Band diagram’. The tungsten atom has …….5s2 5p6 5d4 6s2 electronic structure. When the atoms come close together to form the solid, the close lying states 5d and 6s broaden into bands, with s band broadening considerably more than the d band. This is because of the larger size of the s orbital. The figure schematically shows the allowed energies as a function of the interatomic distance. The number of allowed states is ten per atom in the d band and two in the s band. In tungsten there are six electrons to be shared between these two bands.
Technical data
- Model
- HEM-01
- Manufacturer
- SVS Labs
- Material
- Tungten Strip (8 x 6 x 0.05 mm)
- Hall Voltage
- ~15 mV/10A/10KG
- Range
- 0-20A continuosly variable Pole Pieces : 75mm tappered to 25mm
- Accuracy
- ±0.5% Mag. Field : 17KG ±5% at 10mm airgap
- Regulation
- ±0.5% for ±10% variation of mains Energising Coils : Two of approx. 13 each
- Display
- 3½ digit, 7 Segment LED Power : 0-90Vdc, 3A, for coils in series
- Sample thickness
- 0.05 mm
- Resolution
- 1μV 30
- Used in physics and electronics laboratories for hall effect in metals-related experiments.
- Suitable for undergraduate teaching, postgraduate coursework, and research projects.
- Compact bench-top design fits standard laboratory benches and demonstration setups.
- Hall Voltage in silver indicates negative charge carriers, which
- Hall Voltage to have about same magnitude but opposite direction as in silver.
- When the atoms come close together to form the solid, the
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