Question

Which mathematical relation expresses Curie's Law for paramagnetic substances?

Options

• \[\chi_m\propto T-T_C\]

• \[\chi_m\propto T\]

• \[\chi_m\propto\frac{1}{T-T_C}\]

• \[\chi_m\propto\frac{1}{T}\]

Answer 1

For paramagnetic substances, Curie's Law gives \[\chi_m\propto\frac{1}{T}\]. Here \[T\] is absolute temperature, so susceptibility varies inversely with it.