Question

In which type of material the magnetic susceptibility does not depend on temperature?

• A. Diamagnetic
• B. Paramagnetic
• C. Ferromagnetic
• D. Ferrite

Answer 1

Answer: (A)

The magnetic susceptibility of a material is a measure of the 'ease' with which a specimen of that material can be magnetised in a magnetising field. For a diamagnetic substance magnetic susceptibility $\left({\chi }_m\right)$ is independent of temperature.
According to Curie's law ${\chi }_m$ for paramagnetic and ferromagnetic materials varies as ${\chi }_m\propto \frac{1}{T},T$ being temperature in Kelvin.