P. Hiebel et al., MAGNETIC-LEVITATION USING PERMANENT-MAGNE TS WITH HIGH CRITICAL-TEMPERATURE SUPERCONDUCTORS, Journal de physique. III, 5(6), 1995, pp. 647-659
Citations number
6
Categorie Soggetti
Material Science","Phsycs, Fluid & Plasmas","Physics, Applied
Since their discovery in the years 1986/87, the high critical temperat
ure superconductors have reached nowadays performances interesting eno
ugh to conceive passive magnetic bearings and suspensions which would
combined permanent magnets and naturally stable superconducting pellet
s. After underlining the principal factors that affect the superconduc
tor-magnet interaction, different experimental results are given about
vertical and axial forces with some stiffness values. The magnetizati
on curve of a superconductor help to understand the hysteretic behavio
r of the force as a function of the distance between superconductor an
d magnet. So called simple and hybrid structures of superconducting ma
gnetic suspension are presented. Finally simple numerical simulations
allow to draw some interesting conclusions about both geometry and bes
t fitting structure of permanent magnets.