Pauli Paramagnetism of the Novel Uranium Intermediate Phase UCo_3-xGe_x (0.2 ≤ x ≤ 0.4)

Abstract:

The new compound UCo3-xGex with x = 0.4 was prepared by direct solidification of the corresponding liquid phase, followed by annealing at 973 K. Single crystal X-ray diffraction carried out at room temperature showed that it crystallizes with the hexagonal space group P63/mmc (n°194) and the unit-cell parameters a = 4.890(5) Å and c = 16.405(5) Å. The substitution of Co atoms by germanium atoms in UCo3 (PuNi3 structure type) yields stabilization of the CeNi3 structure. The homogeneity range, evaluated by energy dispersive spectroscopy analysis, extends from x = 0.2(1) to 0.4(1). The electronic properties were investigated by means of DC magnetic susceptibility and DC electrical resistivity measurements. The phase is a Pauli paramagnet and exhibits electrical conductivity characteristic of strongly disordered metals.

• Periodical: Solid State Phenomena (Volume 170)
• Pages: 232-239
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.170.232
• Online since: April 2011
• Authors: Arnaud Soudé, Olivier Tougait, Mathieu Pasturel, Dariusz Kaczorowski, Henri Noël
• Keywords: CeNi₃, Heavy Fermion, Intermetallic, Single Crystal

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