High-field magnetization and other physical properties of Ce2T3X5 compounds (T=Pd, Rh and Cu; X=Si and A1)

Abstract We have synthesized the new ternary compounds Ce2Pd3Si5, Ce2Cu3Si5 and Ce2Rh3A15 that have the orthorhombic U2Co3Si5-type of structure. Measurements of the magnetization and other physical properties have been performed on Ce2T3X5 compounds up to 30 T at 1.5 K and in the temperature range from 2.0 to 300 K. Ce2Pd3Si5 and Ce2Cu3Si5 undergo a transition to the antiferromagnetic state at TN = 7.8 and 4.4 K, respectively. On the other hand, in Ce2Rh3A15 no magnetic transition occurs down to 1.8 K. The highest magnetization values per Ce atom of Ce2Pd3Si5, Ce2Cu3Si5 and Ce2Rh3A15 are 0.96, 0.92 and 0.50 μ B at B=30 T, respectively.