Now, we should be familiar with some important terms related to hysteresis Loop.
1, Definition of Hysteresis
Hysteresis of a magnetic material is a property by virtue of which the flux density (B) of this material lags behind the magnetizing force (H).
2, Definition of Coercive Force
Coercive force is defined as the negative value of magnetizing force (-H) that reduces residual flux density of a material to zero.
3, Residual Flux Density
Residual flux density is the certain value of per unit area that remains in the magnetic material without presence of magnetizing force (i.e. H = 0).
4, Definition of Retentivity
It is defined as the degree to which a magnetic material gains its magnetism after magnetizing force (H) is reduced to zero.
The path a – b
– c – d – e – f – a forms hysteresis loop.
[NB: The shape and the size of the hysteresis loop depend on the nature of the material chosen]
Importance of Hysteresis Loop
The main advantages of are given below.