Soft iron
Nickel
Transformers
Slightly more than unity
Demagnetising metallic parts
Diamagnetic
Magnetic field
Ferri-magnetic materials
Ferrites are a sub-group of Ferri-magnetic materials.
Magneto motive force
A soft iron shielding is used
Reluctivity
Diamagnetic materials
The relative permeability is less than unity in case of Diamagnetic materials.
Tesla
Residual magnetism
Ebonite
Ebonite have the maximum permeability.
24 AT
resistance of the coil
Ferromagnetic particles in a non-ferromagnetic matrix
Super magnetic materials are composed of Ferromagnetic particles in a non-ferromagnetic matrix.