SUPERCONDUCTIVITY EXPERIMENT KIT SK053
Exp-1 To measure the transition temperature of a high temperature superconductor.
Exp-2 To demonstrate the Meissner-Ochsenfeld effect.
- High quality superconductor with in-built four probe & surface temperature sensor.
- Differential voltage probes for temperature & voltage measurement.
- Labpro may be used in other experiments also.
- Graphical display of the data.
- Superconductor.
- Transition temperature.
- Meissner effect
- Critical temperature.
Superconductivity was discovered in 1911, when Kamerlingh Onnes found that the electric resistance of mercury dropped to zero at cryogenic temperatures. The so called transition temperature when a conductor becomes superconducting depends on the material used. For the next 75 years, the transition temperatures were just in the 10 to 20 K range.
In the present setup, the transition temperature of high temperature superconductor YBCO or BSCCO is measured. A probe chamber is used for liquid nitrogen in which the superconducting probe (sample) is cooled to below its critical temperature of approximately 93 K or -180 °C. The superconductivity probe is designed precisely based on four- point measurement for resistivity, the end points for fixed current and middle points for voltage drop. A temperature sensor is also attached on the surface of the sample. The voltage drop across the sample is measured as a function of the sample temperature using the voltage sensor.
Contents:
| Cat. No. | Item Name | Qty. |
| SU001 | Superconductivity measurement unit | 1 |
| SU002 | Superconductivity with Probe arrangment | 1 |
| SU004 | Meissner Effect Sample | 1 |
| SU003 | Probe Chamber | 1 |
| Interface | 1 | |
| Software | 1 | |
| Voltage Probe | 2 |
- Superconductivity Probe SU002
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SPECIFICATIONS Sample : BSCCO or YBCO
Contact : Four point probe devices
Thermocouple : Type 'T' (Copper-Constantan)
Sample Placing : Rugged Brass Casings
Hosing : Acylic
Connection : 4mm plug
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- Superconductivity Unit SU001
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SPECIFICATIONS Input Voltage : 220V, 50Hz AC
Constant Current Source : 150mA, 4mm Socket
Voltage Input terminal for Superconductor : 4mm Socket
Voltage Output terminal for Superconductor : 4mm Socket with gain & offset pot
Temperature Input terminal for Superconductor : 4mm Socket
Temperature Output terminal for Superconductor : 4mm Socket, Calibrated on room temperature.
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- Interface
- Probe Chamber SU003
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SPECIFICATIONS Dimension : 150mm x 100mm
Inner material : Thermocol
Outer material : Wooden
This chamber is designed for liquid nitrogen.
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- Voltage Probe
- Meissner Effect Sample SU004
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SPECIFICATIONS Disks : 1" diameter
Material : YBCO or BSCCO
Magnet : Rare earth
Tweezers : Non-magnetic
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* Additionally Required :
Computer not supplied with the setup.