Open AccessElectronic properties of U{sub 2}Pt{sub 2}Sn
Author(s) -
K. Prokeš,
F.R. de Boer,
H. Nakotte
Publication year - 1995
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/110796
Subject(s) - antiferromagnetism , electrical resistivity and conductivity , tetragonal crystal system , magnetic susceptibility , magnetization , condensed matter physics , specific heat , neutron diffraction , ground state , metamagnetism , materials science , crystallography , magnetic field , chemistry , crystal structure , physics , atomic physics , quantum mechanics
U{sub 2}Pt{sub 2}Sn is crystallizing in an ordered version (space group P4{sub 2}/mnm) of the tetragonal U{sub 3}Si{sub 2}-type of structure. Clear anomalies in the magnetic susceptibility, specific heat and electrical resistivity around 15 K indicate that U{sub 2}Pt{sub 2}-Sn orders antiferromagnetically below this temperature. As expected for an antiferromagnet, the susceptibility and specific heat anomalies are shifted to lower temperatures upon application of external magnetic field. The specific-heat coefficient {gamma} = 327 mJ/mol f.u. K{sup 2} remains unchanged in fields up to 5T. The antiferromagnetic ground state of U{sub 2}Pt{sub 2}Sn can be concluded also from the metamagnetic transition around 22 T in the magnetization at 4.2 K and from magnetic reflections in the neutron-diffraction pattern at low temperatures
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