Flux pinning effect and hysteresis loop

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SUMMARY

The discussion centers on demonstrating the flux pinning effect of the type II superconductor YBCO (Yttrium Barium Copper Oxide) through magnetic levitation. The relationship between the hysteresis loop and the flux pinning effect is crucial for understanding magnetization behavior in superconductors. Specifically, when the magnetic field exceeds the critical value, flux penetration occurs, resulting in a decrease in magnetization. This phenomenon is essential for accurately interpreting experimental results in the lab report.

PREREQUISITES
  • Understanding of type II superconductors, specifically YBCO.
  • Familiarity with the concept of flux pinning in superconductors.
  • Knowledge of hysteresis loops in magnetization versus magnetic field (B-field) contexts.
  • Basic experimental techniques in physics, particularly related to magnetic levitation.
NEXT STEPS
  • Research the principles of flux pinning in type II superconductors.
  • Study the construction and interpretation of hysteresis loops in magnetization experiments.
  • Explore experimental setups for demonstrating magnetic levitation with YBCO.
  • Investigate the critical magnetic field values for YBCO and their implications on magnetization.
USEFUL FOR

Students in experimental physics courses, researchers studying superconductivity, and anyone interested in the practical applications of magnetic levitation and hysteresis in superconductors.

Mayan Fung
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I am taking an experimental course which requires us to conduct experiments by ourselves. One of the tasks is to demonstrate the flux pinning effect of a type II superconductor YBCO by magnetic levitation. The professor asked me to discuss the effect by using the hysteresis loop (magnetization vs B-field) in the lab report.

I tried to search for information on Google but I cannot find articles discussing the relationships between them. I wonder in what direction I can discuss it in my lab report?
 
Physics news on Phys.org
Oh, I think I got the answer. When the magnetic field is larger than the critical value, flux starts to penetrate the solid and the magnetization will drop. Thanks all!
 

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