Now, we are going to study the various types of magnetic materials in terms of the magnetic properties of the atomic dipoles and the interactions between them. Very first distinctions is based on whether the atoms carry permanent magnetic dipoles or not.
| Materials not having permanent magnetic moment | |
| Diamagnetic materials | Materials which lack permanent dipoles or zero magnetic dipole moment are called Diamagnetic. |
| Materials having permanent magnetic moment | |
| Paramagnetic material | If the permanent dipoles do not interact among themselves, the material is Paramagnetic. |
| Ferromagnetic materials | If the interaction among permanent dipoles is strong such that all the dipoles line up in parallel, the material is Ferromagnetic. |
| Antiferro magnetic or Ferrimagnetic materials. | If the permanent dipoles line up in antiparallel direction, the material is Antiferromagnetic and Ferrimagnetic. |
In antiferromagnetic materials the magnitudes of permanent dipoles aligned parallel and antiparallel are equal and hence the magnetization vanishes.
In ferrimagnetic materials, magnitudes of permanent dipoles aligned antiparallel are not equal thus exhibiting magnetization.
| Read More Topics |
| Difference between intrinsic & extrinsic semiconductors |
| Variation of carrier concentration with temperature |
| Difference between N & P type semiconductor |
