Effect of sample geometry on levitation force in seeded-melt-grown single-domain YBa{sub 2}Cu{sub 3}O{sub x}.
Magnetic levitation force is a key factor that influences energy loss in flywheel energy storage applications. Experiments on the relationships between levitation force and YB{sub 2}Cu{sub 3}O{sub x} sample geometry have been conducted. The levitation force has been conducted. The levitation force has been measured for single-domain YB{sub 2}Cu{sub 3}O{sub x} samples with different thicknesses and diameters. It has been found that the thickness dependence agrees well with a current model. However, the measured levitation force that was found only within the linear regime. The levitation force in fact increases as the diameter decreases until a threshold value is reached. As the diameter of HTS sample is reduced smaller than the testing magnet (d=12 mm) the force experiences a rather rapid fall. This behavior can be qualitatively described by a magnetic dipole model based on Meissner currents. Other factors that dominate levitation force are also discussed.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 938024
- Report Number(s):
- ANL/ET/JA-25732; TRN: US200906%%476
- Journal Information:
- IEEE Trans. Appl. Supercond., Vol. 7, Issue 2 ; Jun. 1997
- Country of Publication:
- United States
- Language:
- ENGLISH
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