Advances in Superconductivity IV pp 1049-1054 | Cite as
Levitation Studies in High Tc Superconductors at Lower Temperatures and High Fields
Abstract
Dramatic increases in magnetic levitation forces between magnetic field sources and Y Ba2 C113 O7 have been achieved by new processing methods such as melt textured and melt-quenched materials. This has raised levitation magnetic pressures to 4–5 N/cm2 with small magnetic field magnets of 0.4 T at 78° K. In this paper we report on further increases in force capability from experiments conducted on a melt-powder-melt-growth YBCO sample from the ISTEC laboratories conducted at temperatures of 4.2° K and the interaction with a small low Tc solenoid that produces fields up to 2.0 T. Results show that magnetic pressures up to 60 N/cm2 and higher can be achieved. These results suggest that higher loads for superconducting bearings may be achievable in the near future.
Key Words
magnetic levitation high-Tc superconducting bearingsPreview
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