Title :
Stability and oscillation of MTG high-T/sub c/ superconductors in inhomogeneous magnetic field
Author :
Postrekhin, E.V. ; Zhou, L.W. ; Cai, C.B. ; Gong, S.M. ; Fu, Y.X. ; Zhang, H.
Author_Institution :
Dept. of Phys., Fudan Univ., Shanghai, China
fDate :
6/1/1997 12:00:00 AM
Abstract :
The dependencies of the oscillation amplitude on the oscillation frequency of high-T/sub c/ superconducting (HTSC) melt-texture growth (MTG) ball-sample suspended or levitated in an inhomogeneous magnetic field have been investigated. The dependence of the oscillation amplitude versus the oscillation frequency has maxima. The rotation of the levitated or suspended MTG ring-sample in the rotating magnetic field have been studied. The curve of the sample rotation frequency versus the magnet rotation frequency has maxima which correlate with maxima of the dependence of the oscillation amplitude of the levitated HTSC MTG ball-sample on the frequency of the external magnetic field.
Keywords :
high-temperature superconductors; magnetic levitation; HTSC; YBaCuO; ball-sample; external magnetic field; high-T/sub c/ superconductors; inhomogeneous magnetic field; levitated MTG ring-sample; magnet rotation frequency; melt-texture growth; oscillation amplitude; oscillation frequency; sample rotation frequency; stability; suspended MTG ring-sample; Frequency; High temperature superconductors; Magnetic anisotropy; Magnetic fields; Magnetic flux; Magnetic levitation; Permanent magnets; Perpendicular magnetic anisotropy; Stability; Superconducting magnets;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
