1. The magnetic force will weaken under high temperature use.
2. The magnetic force of ferrite will also be weakened when the current is too large.
Another situation is that if ferrite is placed together with powerful NdFeB, the magnetic force will also be weakened.
NdFeB is a strong magnetic material with high remanence and magnetic energy product. It generates a very strong external magnetic field (it can generate a magnetic field of about 0.5-1.2T depending on the usage). It is a ferrite correction material. The coercive force is low, and the ferrite will demagnetize when encountering the magnetic field generated by NdFeB. In severe cases, the magnetism of the ferrite itself will decrease significantly!
Zhongshan Lianfeng Magnet Company responded.