Question

Write the three points of differences between para-, dia- and ferro-magnetic materials, giving one example for each.

Answer 1

Paramagnetic Materials	Diamagnetic Materials	Ferromagnetic Materials
1. These are materials in which each individual atom has a not nonzero magnetic moment its own.	1. These are materials in which the individual atoms possess no net magnetic moment of their own.	1. These are the materials in which the individual atoms have a net non-zero magnetic moment.
2. Magnetic susceptibility is low and positive.	2. Magnetic susceptibility is low and negative.	2. Magnetic susceptibility is high and positive.
3. In presence of nonuniform magnetic field, it weakly attracts and tend to move from weaker parts of field to stronger parts.	3. In presence of nonuniform magnetic field, it repels and tend to move from stronger parts of field to weaker parts.	3. In presence of nonuniform magnetic field, it strongly attracts and easily move from weaker part of field to stronger parts.
4. They are weakly magnetized in the direction of magnetic field.	4. They are weakly magnetized in the direction opposite to magnetic field.	4. They are strongly magnetized in the direction of magnetic field.
5. Example: Aluminum.	5. Example: Copper.	5. Example: Iron