When the magnet reaches a certain temperature, the magnetism will disappear. How much temperature will the magnetism disappear?
Curie, (Curie point) and Curie temperature (Curie temperature, Tc) or magnetic transition in magnetic materials, refers to the spontaneous magnetization drops to zero temperature, change of ferromagnetic or ferrimagnetic material into the critical point of the magnetic material. When the temperature is lower than the Curie temperature, the material becomes the magnet magnetic field at this time and materials related to the difficult to change; when the temperature is higher than the Curie point, the material becomes paramagnetic, the magnetic field is easy with the surrounding magnetic field change. The Curie point is determined by the chemical composition of the material and the crystal structure.
When a general magnet reaches a certain temperature, the magnetism disappears, and at about 770 degrees, the temperature disappears.As for Tc, each magnetic material is different, for example, the Curie temperature of iron is about 770 DEG C, and the Curie temperature of cobalt is about 1131 DEG C.
Not at any temperature, magnetic materials are magnetic. Magnetic material having a critical temperature Tc, the Curie temperature in the temperature above, due to the intense heat movement under high temperature plateau, plateau magnetic arrangement is chaotic, the magnetization of ferromagnetic material decreased with increasing temperature, it is determined the upper limit temperature of magnetic devices, more than the Curie temperature, the magnetic core inductance decreases until it disappears, the circuit can work normally.
