TY - JOUR
T1 - Vertical force, magnetic stiffness and damping for levitating type-II superconductors
AU - Sanchez, Alvaro
AU - Navau, Carles
PY - 1996/9/1
Y1 - 1996/9/1
N2 - The analytical expressions for the vertical force experienced by a superconducting cylinder situated above a cylindrical permanent magnet are derived within the framework of the critical-state model. The force, with an appropiate normalization, depends on a single parameter, the penetration field of the superconductor, which is proportional to its critical-current density. The results are applied to calculate the vertical magnetic stiffness and damping, from which the conditions for achieving a stable equilibrium of the system and the characteristics of the hysteretic losses associated to small displacements of the superconductor are discussed.
AB - The analytical expressions for the vertical force experienced by a superconducting cylinder situated above a cylindrical permanent magnet are derived within the framework of the critical-state model. The force, with an appropiate normalization, depends on a single parameter, the penetration field of the superconductor, which is proportional to its critical-current density. The results are applied to calculate the vertical magnetic stiffness and damping, from which the conditions for achieving a stable equilibrium of the system and the characteristics of the hysteretic losses associated to small displacements of the superconductor are discussed.
KW - Applications of high-T superconductors c
KW - Levitation
KW - Magnetization
UR - https://www.scopus.com/pages/publications/0030242738
U2 - 10.1016/0921-4534(96)00400-5
DO - 10.1016/0921-4534(96)00400-5
M3 - Article
SN - 0921-4534
VL - 268
SP - 46
EP - 52
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - 1-2
ER -