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Effect of size and geometry on levitation force measurements between permanent magnets and high-temperature superconductors

Conference · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.349889· OSTI ID:5637314
 [1];  [1];  [1];  [2]
  1. Argonne National Laboratory (ANL), Argonne, IL (United States)
  2. Argonne National Laboratory (ANL), Argonne, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
+ Show Author Affiliations
A series of experiments measuring the levitation force between a permanent magnet (PM) and a high-temperature superconductor (HTS) and between pairs of PMs, coupled with finite-element calculations of the forces and fields, has identified factors that influence the levitation force. The self-demagnetizing factor within the HTS and, to some extent, within the PM has a profound effect on magnetic pressure. For large HTSs with strong flux-pinning, the demagnetizing effect of the diamagnetic image of the PM is substantial. For short distances between the HTS and PM, compression of magnetic flux produces a dependence on PM diameter.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5637314
Report Number(s):
ANL/CP--72199; CONF-910608--3; ON: DE91012472
Conference Information:
Journal Name: Journal of Applied Physics Journal Issue: 10 Journal Volume: 70
Country of Publication:
United States
Language:
English

References (5)

Levitation force and magnetic stiffness in bulk high‐temperature superconductors journal May 1990
High‐speed rotation of magnets on high T c superconducting bearings journal January 1990
Amplitude dependence of magnetic stiffness in bulk high‐temperature superconductors journal December 1990
Passive axial stabilization of a magnetic radial bearing by superconductors journal January 1989
Melt processing of bulk high T/sub c/ superconductors and their application journal March 1991

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Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
BARIUM OXIDES
BORON ALLOYS
CHALCOGENIDES
CONFIGURATION
COPPER COMPOUNDS
COPPER OXIDES
CYLINDRICAL CONFIGURATION
DEMAGNETIZATION
FINITE ELEMENT METHOD
GEOMETRY
HIGH-TC SUPERCONDUCTORS
IRON ALLOYS
LEVITATION
MAGNETIC FLUX
MAGNETIC PROPERTIES
MAGNETS
MATHEMATICS
NEODYMIUM ALLOYS
NEODYMIUM BASE ALLOYS
NUMERICAL SOLUTION
OXIDES
OXYGEN COMPOUNDS
PERMANENT MAGNETS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SIZE
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES