Diamagnetic material | Paramagnetic material | Ferromagnetic material |
1. Weakly repelled by magnetic | Weakly attracted by magnetic | Strongly attracted by magnetic |
2. When placed in a magnetic field it is weakly magnetized in a direction opposite to that of applied field. | When placed in a magnetic field it is weakly magnetized in a direction of applied field. | When placed in a magnetic field it is strongly magnetized in a direction of applied field. |
3. µr is slightly less than 1 | µr is slightly more than 1 | |
4. When placed in a magnetic field flux density (B) inside the material is less than in air. | When placed in a external magnetic field, flux density (B) than in air. | When placed in a magnetic field the flux density (B) inside the material is much large than in air. |
5. Xm (susceptibility) does not change with temperature. | Xm varies inversely as the temperature of substance. | Xm decrease with rise temperature |
6. Intensity of magnetization a small and negative value. | I has small and positive value. | I has large positive value. |
7. Xm has small negative value | Xm has small positive value. | Xm has very high positive value. |