Resin-impregnated GdBaCuO bulk superconductor ring prepared by the top-seeded melt-growth technique in air.
Resin-impregnated GdBaCuO bulk superconductors in magnetic field in radial (r) direction. Note that the magnetic flux strength increases from the center toward the two edges.
The arrangement of ten resin-impregnated GdBaCuO bulk superconducting rings.
Resin-impregnated GdBaCuO bulk superconductors in magnetic field in the axial (h) direction (: center). Note that the field decreases monotonously from the center toward the ends.
The trapped field at the center of the ring stack vs the number of the ring magnets.
The high- GdBaCuO superconducting magnet (left), the fabricated high- PM system and the sample holder (middle), supply to the PM system (right).
The flux creep of 1 layer and 7 layer annular PM as a function of time after switching off the external field.
The trapped field profile at 77 K for 24 mm in diameter Gd-123 single-grain samples processed in air by cold-seeding method using an Nd-123/MgO film as a seed crystal. The sample magnetized using 10 T superconducting PM (left) and magnetized using the high- Gd-123 PM (right).
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