QS Study

Properties of Paramagnetic Materials

Paramagnetic materials show the following properties

It can be said that the materials which acquire a small amount of magnetism towards the magnetic field when they are placed in a magnetic field are called paramagnetic material. It is a form of magnetism whereby certain materials are weakly attracted by an externally applied magnetic field, and form internal, induced magnetic fields in the direction of the applied magnetic field. Atoms, molecules or ions in the paramagnetic materials contain permanent magnetic moments.

(i) Paramagnetic materials, in a magnetic field, tend to move from lower field strength to higher field strength. That means these are attracted feeble by the magnetic field.

(ii) When a paramagnetic material is placed in a magnetic field, the magnetic lines of force slightly tend to pass through the material by bending [Figure].

(iii) Magnetic induction B of a paramagnetic material is slightly larger than the applied magnetic field intensity H.

(iv) The value of permeability of a paramagnetic material is slightly larger than I.

(v) Magnetic susceptibility of a paramagnetic material (K) does not depend on the magnetic field intensity.