A paramagnetic material is placed in a magnetic field. Consider the following statements:
(A) If the magnetic field is increased, the magnetization is increased.
(B) If the temperature is increased, the magnetization is increased.
When a paramagnetic material is placed in a magnetic field its atomic dipoles align in a direction parallel to applied magnetic field and the material produces an extra magnetic field in the direction of applied electric field
On increasing the magnetic field the magnetic moment increases in the same direction.
Magnetization or intensity of magnetization is given by formula
Where
M=magnetic moment
V=volume
So, on increasing the magnetic moment magnetization increases
Where
C =constant called curie constant
T=temperature
Also magnetization is given by
Where χ =susceptibility
H=magnetic intensity
Therefore, on increasing temperature, susceptibility decreases, magnetization increases
Therefore, when a paramagnetic material is placed in a magnetic field, on increasing magnetic field, magnetization increases and on increasing temperature, magnetization decreases