A) langevin theory of paramagnetism assumes that atoms or molecules with magnetic moment do not interact with each other and are only affected by the applied field and thermal provocations. that would cause curie's law. in 1907, pierre weiss explained that each magnetic moment interacts with each other. he suggested that this interaction could be explained by an imaginary molecular field (hm = ).
by using molecular field expression derive = c/t-θ for magnetic susceptibility.
b) plot the temperature-dependent curves of magnetic susceptibility for curie and curie-weiss paramagnetism and diamagnetism on a single graph.