John J. Boland
Science
The levitation of a permanent magnet over a type-II superconductor may be modified and controlled by the addition of a variable magnetic field to the magnet-superconductor system. Using this scheme, levitation of a magnet of significantly larger mass was established by the direct interaction of the additonal field with the levitating magnet.
John J. Boland
Science
Takeshi Takamori
JACerS
Takeshi Takamori, Dieter Just
Journal of Applied Physics
Derek B. Dove, Trieu C. Chieu, et al.
BACUS Symposium on Photomask Technology and Management 1992