Magnetic field behind superconductors

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SUMMARY

The discussion focuses on calculating the magnetic field behind superconductors, specifically in the context of a block magnet and a larger superconductor plate. Key parameters include magnetic flux density (B) and magnetic field strength (H). The shielding effectiveness of superconductors at 77 K, with an amplitude of 2 mT and frequency range of 20 Hz to 10 kHz, exceeds 120 dB. Additionally, the force required to move a superconductor plate between two magnetic fields is significant and depends on the polarity of the fields involved.

PREREQUISITES
  • Understanding of magnetic flux density (B) and magnetic field strength (H)
  • Knowledge of superconductivity principles and properties
  • Familiarity with magnetic shielding concepts
  • Basic grasp of electromagnetic forces and their interactions
NEXT STEPS
  • Research the calculation methods for magnetic fields around superconductors
  • Explore the principles of magnetic shielding effectiveness in superconductors
  • Investigate the effects of polarity on forces between superconductors and magnetic fields
  • Learn about the practical applications of superconductors in magnetic field manipulation
USEFUL FOR

Physicists, electrical engineers, and researchers interested in superconductivity and magnetic field applications will benefit from this discussion.

losbellos
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Hej Guys,

Is there a way to calculate the magnetic field behind a superconductor? I mean the model is like some simple block magnet and a bigger superconductor plate to try to shield the magnetic field. How strong the magnetic field would be above(behind) the SC?

B, H is given.

Also is the force of moving out an SC plate in between two magnetic field is significant? Dependent on polarity or not?

Thank you!
 
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Not my field really. I couldn't google exactly what you asked but perhaps as an example see..

http://www.can-superconductors.com/magnetic-shields.html

Shielding effectiveness (77 K, amplitude 2 mT, frequency 20 Hz – 10 kHz)
> 120 dB
 

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