Reverse polarities of rare earth magnets

In summary, the individual is seeking information on the possibility of reversing the polarity of two stuck rare Earth magnets using an electromagnetic pulse or other instrument. They have also provided some literature and it is mentioned that reversing the polarity is energy intensive and may separate the magnets before re-magnetizing can occur. Additionally, using different rare Earth magnets with different Curie temperatures may weaken one but still face the issue of separating the magnets. The use of an electromagnetic pulse or high intensity current may also not be effective in this scenario. The individual also mentions that this topic may be related to free energy projects, but there is literature explaining why this is not possible.
  • #1
chad
1
0
First time writing , hope all goes well.
Looking to understand the properties of rare Earth magnets, are you able to reverse the polarity of two magnets that are stuck together and separate them with an electromagnetic pulse or any other instrument ?

Please if this is the wrong forum , advise me.

Cheers
 
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  • #2
I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?
 
  • #3
Welcome to PF chad,

A bit of literature:
http://en.wikipedia.org/wiki/Magnetic_particle_inspection#Demagnetizing_parts
http://en.wikipedia.org/wiki/Magnet#Demagnetizing_ferromagnets
http://en.wikipedia.org/wiki/Curie_temp
http://en.wikipedia.org/wiki/Néel_Temperature

Reversing the polarity is quite energy intensive, and requires the application of a strong opposite field for reordering. If you wish to do that to only one magnet, the applied field will probably separate the two before you even re-magnetize the one magnet, as the field will need to be strong.
You could use different rare Earth magnets with different Curie temperatures to weaken one but the above problem still stands.
An electromagnetic pulse or high intensity current will affect both as they are in close proximity, or will push the magnet that you do not want to reverse.

P.S.: If this is an Free Energy Project, as magnets have a tendency to inspire this in people, please read more about the how's and why's it will never be possible.
 

1. What are reverse polarities of rare earth magnets?

Reverse polarities of rare earth magnets refer to the phenomenon where the north and south poles of the magnet are switched, resulting in a reversal of the magnetic field. This can occur naturally or can be induced through external forces.

2. How do reverse polarities of rare earth magnets occur?

Reverse polarities can occur in rare earth magnets due to several factors such as exposure to high temperatures, strong magnetic fields, or mechanical stress. These factors can disrupt the alignment of the magnetic domains and cause a reversal of the poles.

3. Can reverse polarities be permanent in rare earth magnets?

In most cases, reverse polarities in rare earth magnets are not permanent and can be reversed back to their original state. However, if the magnet is exposed to extreme conditions or excessive force, the reversal can become permanent.

4. What are the effects of reverse polarities on rare earth magnets?

Reverse polarities can weaken the magnetic strength of the rare earth magnet and cause it to lose its ability to attract or repel other magnetic materials. It can also affect the stability and durability of the magnet over time.

5. How can reverse polarities of rare earth magnets be prevented?

To prevent reverse polarities, it is important to handle rare earth magnets with care and avoid exposing them to high temperatures or strong magnetic fields. Additionally, using proper storage techniques and avoiding excessive mechanical stress can also help prevent reverse polarities in rare earth magnets.

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