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Thermal agitation destroys aligned magnetic domains in ferromagnetic materials. The figure is taken from NIST, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Permanent magnets lose magnetism when heated above the Curie point

Thermal agitation destroys aligned magnetic domains in ferromagnetic materials

Ferromagnetic metals like iron, nickel, and cobalt derive permanent magnetism from aligned electron spin domains. Heating a magnetic material increases atomic thermal agitation, disrupting the parallel alignment of magnetic dipoles. Above a critical threshold known as the Curie temperature, permanent ferromagnetism disappears entirely.

Where this comes from

NIST

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Tags: materials, magnetism, temperature

Permanent magnets lose magnetism when heated above the Curie point: the short answers

Where does this come from, and can I check it?: Thermal agitation destroys aligned magnetic domains in ferromagnetic materials. The figure is taken from NIST, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a science fact?: Yes. It sits on the Science shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.