Notes

Soft Ferromagnetic Material …

Soft Ferromagnetic Material is:
There is a class of ferromagnetic materials in which the magnetisation disappears on removal of the external field. Soft iron is one such material. Appropriately enough, such materials are called Soft Ferromagnetic Material. There are a number of elements, which are ferromagnetic: iron, cobalt, nickel, gadolinium, etc. The relative magnetic permeability is > 1000.