On the Magnetic and Mossbauer Spectroscopic Characterization of EuPd_2Sb_2

摘要

The CaBe_2Ge_2-type antimonide EuPd_2Sb_2 (P4mm, a = 462.43(7), c = 1056.1(2) pm) was synthesized by induction melting of the elements in a sealed tantalum tube. Temperature-dependent magnetic susceptibility measurements have revealed Curie-Weiss behavior with an experimental magnetic moment of 7.93(1)μ_B/Eu atom, indicating stable divalent europium. EuPd_2Sb_2 orders antiferromagnetically at T_N = 4.5(2) K as is also evident from almost full hyperfine field splitting (B_h = 19.5 T) in the ~(151)Eu Mossbauer spectrum at 4.2 K.