What is the Curie temperature of permanent magnet ferrite?

It is reported that the Curie temperature of ferrite is around 450 ℃, usually greater than or equal to 450 ℃. The hardness is around 480-580. The Curie temperature of neodymium iron boron magnets is generally between 350-370 ℃. But the temperature at which neodymium iron boron magnets are used cannot reach the Curie temperature. When the temperature exceeds 180-200 ℃, the magnetic properties have decayed significantly, and the magnetic loss is also significant, which has lost its practical value.

What are the effective parameters of magnetic cores generally?

Magnetic cores, especially ferrite materials, have various geometric dimensions and so on. To meet various design requirements, the size of the magnetic core is also calculated to meet optimization requirements. These existing magnetic core parameters include physical parameters such as magnetic path, effective area, and effective volume.