Crystal Structure and Physical Properties of U3T3Sn4 (T = Ni, Cu) Single-Crystals
L. Shlyk, P. Estrela, J. C. Waerenborgh, L. E. De Long, A. de Visser, D. P. Rojas, F. Gandra, M. Almeida
Abstract
Heat capacity experiments, crystal structure determination and transmission electron microscopy have been carried out on U3Cu3Sn4 single-crystals. U3Cu3Sn4 was confirmed to be a heavy-fermion antiferromagnet (TN=13(1) K) with a low temperature electronic heat capacity coefficient gamma=390 mJ/molUK2. Low temperature heat capacity experiments on a U3Ni3Sn4 single-crystal indicate that below 0.4 K there is a crossover between the previously observed non-Fermi liquid behavior and a Fermi liquid state.
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