What substances can be used to make permanent magnets?
| August 4, 2020 | Education
A permanent magnet is a product made of a hard magnetic material with a high residual magnetic induction, which retains the state of magnetization for a long time. Permanent magnets are usually made from iron, steel, cast iron and other iron alloys (strong magnets), as well as from nickel, cobalt (weak magnets).
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