Diamagnetic Material
The materials that allow flow of magnetic field through them are called as Magnetic Materials.
- In Diamagnetic material there is no magnetism in the absence of external magnetic field. (Shown in fig. 1)
- When magnetic field is applied dipoles are induced and they orient in a direction opposite to external magnetic field. (As in Fig.2)
Magnetization
Ability of dipoles to align when magnetic field is applied.
Susceptibility (X)
Susceptibility (X) is a measure of material to get magnetized when external magnetic field is applied.
M & H are opposite
X < 0
Relative Permeability (μr)
Relative Permeability of a material is related to ability of material to allow magnetic field line to pass through it.
μ=μoμr
Where μo = Permeability of free space
= 4π∗10^(-7) H/m
μr=1+X<1
μ< μo
Magnetic Flux Density (B)
- B represents the closeness of magnetic field lines to each other
B= μ∗H
μ< μo
Bair > Bdiamagnetic material
•In a diamagnetic material magnetic field lines diverge away from each other
•Example:- Copper (Cu), Silicon (Si), Germanium (Ge), Gold and Diamond