Abstract
Low temperature heat capacity, magnetic susceptibility and ac resistivity were measured on CeCd 11. Evidence is reported for the existence of a crystalline electric field (CEF) effect in CeCd 11 in these low temperature property measurements. The ground state of the Ce 3+ ion, 2F 5 2 , is split by CEF of tetragonal symmetry into three doublets, with an energy equal to E 0=0, E 1=17.5 K and E 2=80.2 K, respectively. The magnetic entropy up to 70 K was calculated from heat capacity data. The magnetic susceptibility follows a CEF modified Curie-Weiss behavior with an effective moment of p eff =2.57 μ B indicating that 4f-electrons of Ce 3+ ions are localized. Comparison of the ac resistivity of our sample with spin-disorder resistivity in presence of CEF is also discussed.
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