Crystal Chemistry and Physics of UCd₁₁

Abstract

In the phase diagram U-Cd, only one compound has been identified so farUCd11 (space group Pm3̅m). Since the discovery of this material, the physical properties of UCd11 have attracted a considerable amount of attention. In particular, its complex magnetic phase diagramas a result of tuning with magnetic field or pressureis not well-understood. From a chemical perspective, a range of lattice parameter values have been reported, suggesting a possibility of a considerable homogeneity range, i.e., UCd11–x. In this work, we perform a simultaneous study of crystallographic features coupled with measurements of physical properties. This work sheds light on the delicate relationship between the intrinsic crystal chemistry and magnetic properties of UCd11.

Discovery and Characterization of Antiferromagnetic UFe5As3

“…It has been suggested that among the U–Fe–Si compounds, magnetism is driven predominantly by itinerant electrons. 52 Our preliminary analysis of another newly discovered compound UFe 4 As 2 62 indicates that, much like in UFe 5 As 3 , the uranium 5f orbitals in this system appear to be highly delocalized.…”

Synthesis, magnetic and NMR spectroscopic properties of the MAl5Pt3 series (M = Ca, Y, La–Nd, Sm–Er)

“…In contrast to UFe 5 As 3 and related compounds no twinning was observed. 69 Details of the structure determination, atomic parameters and interatomic distances can be found in Tables 2-4. When looking at the refined anisotropic displacement parameters (ADP) of the atoms, Er exhibits a value of 85 pm 2 , which is larger than the…”