This is what happens when iron is heated above its Curie Point (770 °C)
At around 770 °C, iron (Fe) reaches its Curie point, which is the critical temperature at which it transitions between the ferromagnetic and paramagnetic states.
Below this temperature (770 °C ≈ 1043 K), the atomic magnetic moments in iron align within regions called magnetic domains, producing strong and persistent magnetism.
When iron is heated above the Curie point, thermal agitation disrupts this alignment, and the material loses its ferromagnetic properties and becomes paramagnetic.
Iron is a classic example used to illustrate the Curie point, but other ferromagnetic materials have different thresholds.
Cobalt transitions at around 1100 °C, while nickel transitions at around 350 °C.
The phenomenon was first described by Pierre Curie in 1895. He showed that certain materials lose their spontaneous magnetization when heated beyond a specific temperature, a behavior that is now known as the Curie effect.
This temperature threshold is important in practical engineering. For example, the iron cores in soldering irons must remain below their Curie point to maintain stable magnetic performance.
In magneto-optical storage, materials are temporarily heated above their Curie temperature to erase or rewrite data by suppressing their magnetism.
Con la inteligencia artificial podéis hacer un video en unos segundos pero nunca logrará la belleza plástica qué lograron los artistas detrás de una joya como “Akira” (1988, Katsuhiro Otomo).
#AI#ArtificialInteligence 👎🏼