What temperature do neodymium magnets lose their magnetism?
Neodymium magnet, also known as neodymium iron boron strong magnet (rare earth magnet), the question today is what is the temperature at which the neodymium magnet loses its magnetism? What is the temperature at which the magnetism disappears completely?
The temperature difference between magnets of different materials is very large. The standard N-series neodymium magnet can withstand 80 ℃ temperature and will start to decrease at 80 ℃. If the magnet returns to room temperature soon, all its magnetism will return. However, if the temperature is kept above 80 ℃ for a long time, the magnetism may be permanently lost.
The limiting working temperature of N series Nd-Fe-B products is 80-180 ℃, and the permanent demagnetization temperature is 310 ℃, which is the Curie temperature of N35 grade Nd-Fe-B magnets.
In normal temperature, there are also several cases in which magnetic force may disappear.
1. Severe collision
2. Put it in a strong magnetic field
Demagnetization is a gradual process, and Curie temperature refers to the complete loss of magnetism when reaching this temperature.
PS：The shape of a neodymium magnet directly influences how much heat it can withstand. In general, a thin magnet will be more susceptible to heat than a thick, bulky magnet.
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