Can diamagnetism be created electrically

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Discussion Overview

The discussion centers around the possibility of creating diamagnetism electrically, questioning whether it is inherent to certain materials or can be induced through electrical means. Participants explore theoretical and practical implications, including the use of electromagnets and specific materials.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions if diamagnetism can be created electrically or if it requires inherently diamagnetic materials.
  • Another participant suggests that an electromagnet could create a repelling effect under the right conditions, prompting further inquiry into specific setups.
  • A participant proposes using a hovering magnetic sphere and discusses the limitations of materials like bismuth and pyrolytic carbon, considering copper coils as a potential alternative.
  • There is mention of a video demonstrating that a changing magnetic field can induce significant electron currents in copper, leading to a repelling magnetic field, although static levitation is noted to be minimal without such changes.
  • A later reply expresses gratitude for the clarification and indicates a newfound understanding of the concepts discussed.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether diamagnetism can be created electrically, with multiple viewpoints presented regarding the role of material properties and the influence of changing magnetic fields.

Contextual Notes

The discussion involves assumptions about the nature of diamagnetism and the effectiveness of various materials and setups, which remain unresolved.

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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