Crystal growth, structure, and physical properties of Ln 2PdGa 12 (Ln = La, Pr, Nd, and Sm)

Single crystals of Ln 2PdGa 12 (Ln = La, Pr, Nd, Sm) were synthesized with a molten Ga flux. The intermetallic phases are isostructural to Sm 2NiGa 12 with cell dimensions of a ∼ 6.1 and c ∼ 15.5 . Pr 2PdGa 12, Nd 2PdGa 12, and Sm 2PdGa 12 order antiferromagnetically at 18, 7.5, and 7.5 K, respectively, and magnetic properties of single crystals oriented parallel and perpendicular to the magnetic field are presented. Fitting the low temperature heat capacity of Pr 2PdGa 12 gives a Sommerfeld coefficient (γ) of 250 mJ mol -1 K -2 and indicates the possibility of heavy fermion behavior. © Published by Elsevier B.V