Can diamagnetism be created electrically

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SUMMARY

This discussion centers on the feasibility of creating diamagnetism electrically, specifically through the use of electromagnets and copper coils. Participants confirm that while materials like bismuth and pyrolytic carbon exhibit diamagnetism, a changing magnetic field can induce diamagnetic effects in copper, generating repulsive forces. The conversation highlights that static levitation is minimal without a changing magnetic field, as demonstrated in a referenced video. The key takeaway is that electromagnets can facilitate diamagnetic repulsion under the right conditions.

PREREQUISITES
  • Understanding of electromagnetism principles
  • Familiarity with diamagnetic materials such as bismuth and pyrolytic carbon
  • Knowledge of induced electromotive force (EMF) in conductive materials
  • Basic concepts of magnetic field interactions
NEXT STEPS
  • Research the design and geometry of effective electromagnets
  • Explore the properties and applications of diamagnetic materials
  • Learn about the principles of induced EMF and its effects on conductive materials
  • Investigate advanced levitation techniques using changing magnetic fields
USEFUL FOR

Physicists, electrical engineers, and hobbyists interested in electromagnetism and magnetic levitation techniques will benefit from this discussion.

Carl Sabel
I was wondering if diamagnetism can be created electrically or does the material have to be diamagnetic in nature?
 
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Carl Sabel said:
I was wondering if diamagnetism can be created electrically or does the material have to be diamagnetic in nature?
Welcome to the PF. :smile:

You mean just to be repelled by a magnetic field? An electromagnet can do that, given the right geometry for the setup. What do you have in mind?
 
berkeman said:
Welcome to the PF. :smile:

You mean just to be repelled by a magnetic field? An electromagnet can do that, given the right geometry for the setup. What do you have in mind?
I'm thinking about a hovering magnetic sphere but neither bismuth or pyrolytic carbon is strong enough. Maybe a copper coil would somehow do the job better. As liquid nitrogen can not be used no superconductors are used.
 
See the video in post #9 of this thread. https://www.physicsforums.com/threa...w-moving-piece-of-metal-static-magnet.924786/ This diamagnetic effect is the result of a changing magnetic field (from the falling magnet) so that tremendous electron currents occur in the copper, generating a magnetic field that repels the floating magnet. The diamagnetic effect in the static case, without a changing magnetic field to create the EMF that generates the currents in the copper, is very small, so that there isn't a static levitation, but it's interesting how the magnet floats down, instead of falling quickly.
 
Charles Link said:
See the video in post #9 of this thread. https://www.physicsforums.com/threa...w-moving-piece-of-metal-static-magnet.924786/ This diamagnetic effect is the result of a changing magnetic field (from the falling magnet) so that tremendous electron currents occur in the copper, generating a magnetic field that repels the floating magnet. The diamagnetic effect in the static case, without a changing magnetic field to create the EMF that generates the currents in the copper, is very small, so that there isn't a static levitation, but it's interesting how the magnet floats down, instead of falling quickly.
Oh thank you! Now I see what you mean.
 
As you can see in this: video, the magnetic field can get extremely strong so I believe I have found what I'm looking for. Thank you everyone, best regards Carl.
 
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