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Demagnetisation curve

The demagnetisation curve
The demagnetisation curves are located in the second quadrant of the hysteresis curve. These curves indicate the differences between the Neodynium Iron Boron, the Samarium Cobalt, the Alnico and the ferrite magnets, that we use in our magnetic assemblies.

Remanence B is the magnetic induction value which is use in the magnet according to operating point.

Coercitive field Hc indicates the necessary demagnetising fi eld in order to cancel the induction within the magnet. This can occure in case of demagnetising fields.