Re: Do Permanent Magnets Dissipate?

Handy explanation of the processes involved, and why permenet magnets
eventually will lose their polarity. I suppose even at cryogenic
tempuratures, it is possible for magnets to lose their strength?
Interesting comment you made at the end of your reply though:

>Now for the last question; the only true "permanent" magnet I know of
>offhand would be a superconducting loop; it only has one domain in a
>manner of speaking.

Now this might be more what I'm looking for. I'm designing a
theoretical machine that requires parts capable of remaining (truly)
permanently magnetized. As you say, these superconducting loops only
have one domain; in that case, would it be possible to arrange them in
a way to function identically as their traditional magnet counterparts?

.

Relevant Pages

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