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  Prokes, K.; Fabelo, O.; Süllow, S.; Lee, J.; Mydosh, J.A.: High temperature tetragonal crystal structure of UPt₂Si₂. Zeitschrift für Kristallographie 235 (2020), p. 175-181

10.1515/zkri-2020-0018
Open Access Version

Abstract:
High temperature crystal structure of UPt2Si2 determined using single-crystal neutron diffraction at 400 K is reported. It is found that the crystal structure remains of the primitive tetragonal CaBe2Ge2 type with the space group P4/n m m. Anisotropic displacement factors of the Pt atoms at the 2a (3/4 1/4 0) and Si atoms at the 2c (1/4 1/4 z) Wyckoff sites are found to be anomalously large.