Digitale Medien
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
73 (1993), S. 1198-1204
ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
A complete loop of hysteretic force has been calculated for hard superconductors in an almost-constant-gradient magnetic suspension system, which consists of a pair of oppositely wound superconducting coils. The dependences of levitation forces on the sample size, critical current density, external field strength, field gradient, and the magnetic history were investigated. Dynamic spring constants as well as magnetic damping coefficients were inferred from minor loop calculations. The minor loops, similar to the Rayleigh loops for ferromagnetic materials, could be described in quadratic terms. The major loops strongly depend on the magnetic passage, a flux-trap effect which is responsible for the subtlety in obtaining reproducible hysteresis loop. The basic physics of levitation and inverse levitation will be quantitatively illustrated.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.353286
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