Abstract

High-field magnetization measurements at 4.2 K on several U 2T 2X (T = Ni, Rh, Pd, Pt; X = In, Sn) compounds have been performed on free and fixed powders up to 57 T. An antiferromagnetic ground state of U 2Ni 2Sn is corroborated by metamagnetic transitions at 30, 39 and 51 T. U 2Rh 2Sn shows one metamagnetic transition at 21 T and U 2Pd 2Sn two metamagnetic transitions at 39 and 45 T. U 2Pt 2In shows no metamagnetism up to 57 T which is in agreement with the non-magnetic ground state of this compound. The short-pulsed measurements up to 57 T are compared with previous results obtained in quasi-static fields up to 35 T.

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