Abstract
Motion of a high- T c superconducting (HTS) thin film was observed in microgravity experiments with a free fall drop shaft facility. The field-cooled thin film was suspended under a permanent magnet in the free fall experiments. When the magnet was rotated in microgravity, the thin film moved to a stable position where centrifugal force was balanced to restoring force caused by pinning of superconductor. The motion of the HTS thin film is numerically evaluated by using the frozen field model, which is based on an assumption that fluxoids are fixed at pinning points on the surface of the superconductor. The numerical evaluation is useful to explain the experimental results.
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