Using a high temperature superconductor (HTSC), this kit demonstrates the main magnetic property of the superconductors called the Meissner effect, which was discovered by W. Meissner in 1933.
If the superconductor is cooled under a weak magnetic field to a temperature below its critical temperature (T). Below T, the superconductors become superconducting – they lose the electrical resistance. The magnetic field is extracted from the superconductor’s volume without penetrating it, causing the superconductor to become perfectly diamagnetic. This property is called the Meissner effect.
The pure Meissner effect can only be observed under a weak magnetic field. But if the high temperature superconductors (belonging to the type of superconductors that conduct strong magnetic fields) are used, the situation is more complicated. A stronger magnetic fi eld is extracted only partially and a part of the magnetic flux penetrates the superconductor. Nevertheless, the demonstration of the magnetic fl ux expulsion using HTSC is easy and simple with the use of liquid nitrogen as a coolant to bring the superconductor below its critical temperature.
This kit demonstrates the levitation of a small rare earth magnet above the high temperature superconductor caused by the partial expulsion of the magnetic fl ux from the HTSC volume.
Kit Includes
Insulated styrafoam experimental cup
Superconducting levitator
Spacer
Magnet holder
NdFeB permanent magnet
Tweezers
Superconducting HTSC disk
Small NdFeB magnet
Instructions and rules for handling liquid nitrogen
*LIQUID NITROGEN NOT INCLUDED
If the superconductor is cooled under a weak magnetic field to a temperature below its critical temperature (T). Below T, the superconductors become superconducting – they lose the electrical resistance. The magnetic field is extracted from the superconductor’s volume without penetrating it, causing the superconductor to become perfectly diamagnetic. This property is called the Meissner effect.
The pure Meissner effect can only be observed under a weak magnetic field. But if the high temperature superconductors (belonging to the type of superconductors that conduct strong magnetic fields) are used, the situation is more complicated. A stronger magnetic fi eld is extracted only partially and a part of the magnetic flux penetrates the superconductor. Nevertheless, the demonstration of the magnetic fl ux expulsion using HTSC is easy and simple with the use of liquid nitrogen as a coolant to bring the superconductor below its critical temperature.
This kit demonstrates the levitation of a small rare earth magnet above the high temperature superconductor caused by the partial expulsion of the magnetic fl ux from the HTSC volume.
Kit Includes
Insulated styrafoam experimental cup
Superconducting levitator
Spacer
Magnet holder
NdFeB permanent magnet
Tweezers
Superconducting HTSC disk
Small NdFeB magnet
Instructions and rules for handling liquid nitrogen
*LIQUID NITROGEN NOT INCLUDED
Properties
- F487805