 This experiment gives you an idea of how to make conductivity measurement in low-temperature regime using a closed cycle helium cryostat, compressor, vacuum unit, chiller/re-circulator and temperature controller. The cryostat can achieve temperatures in the vicinity of 7K when subject to a vacuum of 1 mtorr. Materials like conductors, semiconductors, and superconductors are subjected to such measurements. |
|
| Software Code | codes |
| Sample Results | Resistivity versus temperature plot for AluminumResistivity versus temperature plot for Copper |
| Hardware Manual | Introduction to laboratory cryogenics (Janis Research) |
| Experiment Code | 2.17 |
Further Readings and References
- “A method of measuring specific resistivity and Hall effect of discs of arbitrary shapePhilips Res. Repts, L. J. van der Pauw, 13, 1, (1958).