Demonstration Kit 2 — Strong Levitation Force + Meissner Effect
Example of applicable superconductivity.
Easy handling superconducting magnetic top of 0.1 kg levitating and flying above high temperature superconductor cooled by liquid nitrogen demonstrates strong forces between NdFeB permanent magnet and superconducting YBaCuO levitator. The kit also includes aids for Meissner effect demonstration (as in CSDK1 kit).
The disk for Meissner Effect is prepared in a way that the trapped magnetic field is very weak and the Meissner Effect then dominates over the trapped field. Therefore this Y-Ba-Cu-O disk for Meissner Effect demonstration is made ofpolycrystalline materialthat shows low critical currents.
On the other hand, the disk for demonstration of strong levitation force (flywheel demo, etc.) is prepared in a way that allows flow ofhigh critical currentsandthe trapped magnetic field is highanddominates over the Meissner Effect. This is achieved by preparing the Y-Ba-Cu-O disk asa single crystalof high critical currents.
The kit contains:
1 × YBCO-123 disk for Meissner Effect, diameter 22 mm, height 3 mm
1 × YBCO levitation disk, diameter 21 mm, height 7mm
1 × small rare earth magnet, NdFeB, diameter 4 mm, height 1.5 mm, grade N42
1 × rare earth magnet, NdFeB, diameter 15 mm, height 5 mm, grade N38