For Diamagnetic magnetic susceptibility is negative... for paramagnetic magnetic susceptibility is greater than one... for ferromagnetic magnetic susceptibility is very greater than 1 while for superconductor it is zero

Susceptibility of a Magnetic Substance

Diamagnetic Materials:
- Diamagnetic materials are those that have a negative magnetic susceptibility, meaning they are repelled by a magnetic field.
- The susceptibility of diamagnetic materials decreases with an increase in temperature.
- This is because at higher temperatures, thermal motion disrupts the alignment of atomic magnetic moments, resulting in a weaker response to the applied magnetic field.
- The strength of the magnetizing field also affects the susceptibility of diamagnetic materials. However, the effect is relatively weak compared to other types of magnetic materials.

Ferromagnetic Materials:
- Ferromagnetic materials exhibit a positive magnetic susceptibility and are strongly attracted to a magnetic field.
- The susceptibility of ferromagnetic materials is highly dependent on temperature and the strength of the magnetizing field.
- At low temperatures, ferromagnetic materials exhibit a high susceptibility due to the alignment of atomic magnetic moments in a parallel manner, resulting in a strong response to the magnetic field.
- As the temperature increases, thermal energy disrupts this alignment and reduces the susceptibility of ferromagnetic materials.
- In addition to temperature, the strength of the magnetizing field also influences the susceptibility of ferromagnetic materials. A stronger magnetic field will result in a higher susceptibility.

Paramagnetic Materials:
- Paramagnetic materials have a positive magnetic susceptibility but weaker than ferromagnetic materials.
- The susceptibility of paramagnetic materials is also dependent on temperature and the strength of the magnetizing field.
- At low temperatures, paramagnetic materials exhibit a higher susceptibility due to the alignment of atomic magnetic moments in the presence of a magnetic field.
- However, as the temperature increases, thermal energy disrupts this alignment, leading to a decrease in susceptibility.
- The strength of the magnetizing field also affects the susceptibility of paramagnetic materials. A stronger magnetic field will result in a higher susceptibility.

Superconductors:
- Superconductors are materials that exhibit zero electrical resistance and perfect diamagnetism.
- They have a susceptibility of -1, indicating complete repulsion of magnetic fields.
- The susceptibility of superconductors is not influenced by temperature or the strength of the magnetizing field.
- Below a critical temperature called the superconducting transition temperature, superconductors expel magnetic fields due to the formation of Cooper pairs, resulting in perfect diamagnetism.
- This phenomenon is known as the Meissner effect.

In conclusion, the susceptibility of magnetic substances depends on temperature and the strength of the magnetizing field. Diamagnetic materials are repelled by magnetic fields, and their susceptibility decreases with increasing temperature. Ferromagnetic and paramagnetic materials exhibit positive susceptibility, with the alignment of atomic magnetic moments being disrupted by temperature. The strength of the magnetizing field also affects the susceptibility of these materials. Superconductors, on the other hand, exhibit perfect diamagnetism with a constant susceptibility of -1, independent of temperature or the strength of the magnetizing field.