Crystalline electric field effects on the resistivity of PrAl2

Calculations in the mean field approximation of the magnetic contribution to the resistivity of a J = 4 ion in a cubic lattice, considering the effects of the crystalline electric field, are presented for both T >T_c and T < T_c (excluding the critical region). The magnetic contribution to the resistivity of ferromagnetic PrAl₂ is discussed in terms of the above calculations and the total crystalline electric field splitting of this system is determined to be 100 K. Results are also presented for the critical behavior of d?/dT.