Register to reply 
Flux trapping effect. 
Share this thread: 
#1
Nov1412, 02:57 AM

P: 9

Magnetic suspension and levitation is the caused by the flux trapping effect in superconductors.How does this flux get "trapped"?
Another quick question We link a magnet to a superconductor by bringing it very close to one ,until both of them start attracting and repelling. My question is, if the magnetic field strength of this magnet is greater than the critical field of the superconductor,the superconductor will lose its properties and become normal, instead of demonstrating magnetic levitation and suspension ,right ? 


#2
Nov1412, 07:36 PM

P: 123

This phenomena is called the Meissner Effect. Wikipedia offers a great explanation of the subject. If you are looking for a mathematical explanation, you should look up the "London Equations" I believe the explain the expulsion of flux mathematically.
http://en.wikipedia.org/wiki/Meissner_effect http://en.wikipedia.org/wiki/London_equations 


#3
Nov1512, 04:22 AM

Sci Advisor
PF Gold
P: 2,245

The flux lines are trapped around impurties, gain boundaries etc. The math is quite complicated, but can be found in standard textbooks (see e.g. Tinkham) 


Register to reply 
Related Discussions  
Why does emphysema cause air trapping?  Biology  0  
Trapping electrons  Atomic, Solid State, Comp. Physics  1  
Particle Trapping  General Physics  3  
Trapping Photons  Quantum Physics  2 