Question

The magnetic susceptibility of a solid of volume v follows the Curie-Weiss law X = C/(T - theta ), where c and theta are constants for the material. obtain an expression for the heat capacity of the solid at constant applied field. By how much would the temperature of the solid decrease in an adiabatic demagnetization process from H_i to H_f? Sketch the processes on a T-S diagram.

Answer 1

above question from magnetic susceptibility of a solid volume

? = C/T. though ? is a constant.

? = C/(T ? ?)

??1(T,U)?T?Tc(U)

0.5 .- Curle 0.3 0.2 0.3 0.4 0.1 0.2 02 KT B/kT

Now second part;

T-S diagram;

s, Adiabatic C demagnetization 1 K Temperature