3 ms·
Superdiamagnetism occurs primarily in superconductors. Reminder that flux-pinned levitation only occurs when superconductors are cooled from above to below the
by jeepers6 3y ago
Superdiamagnetism occurs primarily in superconductors.
Reminder that flux-pinned levitation only occurs when superconductors are cooled from above to below their critical temperature while in a local magnetic field.
The researchers probably didn’t heat up their big sample above the critical temperature in air as that could have mechanically destroyed it. It was already chipped almost in two.
- mitthrowaway2 3y ago> Reminder that flux-pinned levitation only occurs when superconductors are cooled from above to below their critical temperature while in a local magnetic field. Casual demonstrations of levitating superconductors involve first submerging the superconducting material in a (non-magnetized) tub of LN2, and then moving it onto a magnetic track. For example, https://www.youtube.com/watch?v=X5EoUD-BIss https://www.youtube.com/watch?v=X5EoUD-BIss
- jeepers6 3y agoThat’s true, surprising to hear that the YBCO SC in that video is only 30um think.