What are the most important properties of permanent magnetic materials? Explain.
The most important properties of permanent magnetic materials are
(i) Remanence (Residual magnetism(Br):
It is the intensity of the residual magnetism after the magnetism field(H) has been abolished.
(ii) Coercive force(Hc):
It is the resistance of magnetic material to demagnetization by electromagnetic methods.
(iii) Energy product value (BH)max:
It is a measure of the quantity of magnetic energy stored in a magnet after the magnetising field is abolished.