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rare-earth magnet
(redirected from Rare earth permanent magnet)

   Also found in: Acronyms, Wikipedia 0.01 sec.
rare-earth magnet [′rer ‚ərth ′mag·nət]
(electromagnetism)
Any of several types of magnets made with rare-earth elements, such as rare-earth-cobalt magnets, which have coercive forces up to ten times that of ordinary magnets; used for computers and signaling devices.


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Neodymium-boron-iron rare earth permanent magnets develop magnetic fields up to 25 times stronger than conventional ceramic or alnico units, with no increase in size, according to the company.
Magnets The advent of rare earth permanent magnets has enabled the design of high-intensity magnetic circuits operating without electrical energy.
Thomas Edison, who had the first patent on an eddy current device in 1889, did not have rare earth permanent magnet material available during his lifetime, nor were there aluminum cans to recover.
 
 
 
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