Depolarizing Magnets: Possibilities and Limitations

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In summary, the speaker is asking if covering one side of a disc magnet with non-magnetic glue will weaken the polarity of that side. They also want to know if adding more layers of glue will further weaken the magnet. Their ultimate goal is to attach two magnets together via the non-polarized sides to create a single pole magnet. However, it is unlikely that this method will work and the speaker has received additional information on a forum post about this topic.
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homer5677
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Hey guys,
It has been a while since I've done anything to do with magnetism and was wondering if I covered one side of a disc magnet is a non magnetic glue, would this weaken the polarity of this side? And the more layers of glue I 'paint' on, the weaker this side of the magnet is.
In the overall picture I would like to attach 2 of these to each other via the depolarized side and have a 'magnet' that is overall one pole. (Or as close to it as possible!)

Is this idea way off the mark or is it possible. Or is there a better way to go about it.
 
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  • #2
This isn't going to work as you want it to. Also, I posted more to your 'sticky' thread in General Physics.
 

FAQ: Depolarizing Magnets: Possibilities and Limitations

Can you depolarize a magnet?

Yes, it is possible to depolarize a magnet. This process involves exposing the magnet to high temperatures, strong magnetic fields in the opposite direction, or physical shock. However, the strength of the magnet may not return to its original level after depolarization.

How do you depolarize a magnet?

There are several ways to depolarize a magnet. One method is to heat the magnet above its Curie temperature, which is the temperature at which the magnetic domains lose their alignment. Another method is to apply a strong magnetic field in the opposite direction to the magnet, causing the domains to realign in the opposite direction. Physical shock, such as dropping or hitting the magnet, can also depolarize it.

Why would you want to depolarize a magnet?

There are a few reasons why someone might want to depolarize a magnet. One reason is to erase or reset the magnet's magnetic field, which can be useful in certain applications. Another reason is to weaken the magnet's strength, as some magnets may be too strong for their intended use. Additionally, depolarizing a magnet can be a necessary step in the manufacturing process of certain types of magnets.

Is it possible to repolarize a magnet?

Yes, it is possible to repolarize a magnet. This can be done by exposing the magnet to a strong magnetic field in the desired direction. However, the strength of the repolarized magnet may not be as strong as its original level before depolarization.

Can you depolarize a magnet back to its original strength?

In most cases, depolarizing a magnet will result in a decrease in its strength. While it is possible to repolarize the magnet, it may not reach its original strength. The exact strength of a repolarized magnet will depend on various factors, such as the type of magnet, the strength of the applied magnetic field, and the temperature at which it is repolarized.

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