Insight into the physics of the 5f -band antiferromagnet U2Ni2Sn from the pressure dependence of crystal structure and electrical resistivity

La2Pd2In: superconductivity and lattice properties at ambient and elevated pressures

“…The explanation of the softer a-direction may be the same as in the case of temperature variations. Similar situation, but with a higher k a /k c ratio, was observed for isostructural U 2 Ni 2 Sn, with k a = 0.0063 GPa −1 , k c ≈ 0, giving B = (80 ± 10) GPa [2]. The softer bonding within the basal plane of the rare-earth based R 2 T 2 X tetragonal compounds can be expected due to more degrees of freedom of atomic arrangement, but it has not been attested yet in number of cases sufficient to speak about a general tendency or a rule.…”

“…Fitting results in the following parameters: ρ 0 = 13.90 μΩ cm, A = 52.62 μΩ cm, θ D = 213 K, c = 0.91 and T 0 = 64 K. Similarly, for electrical current applied along the crystallographic a-direction, the best fit was also obtained using equation (2). The resulting parameters are ρ 0 = 35.24 μΩ cm, A = 84.24 μΩ cm, θ D = 213 K, c = 0.36 and T 0 = 51 K.…”

“…This layered crystal * Author to whom any correspondence should be addressed. structure with the sheets of R atoms alternating along the crystallographic c-axis with the T -X (T = transition element, X = p-metal) sheets represents a playground for investigation of possible Shastry-Sutherland type of geometrical frustration, for variations of magnetism due to 5 f -d hybridization, or for effects caused by H absorption [1][2][3]. Besides magnetic compounds, the non-magnetic ones with R = La, Lu, or Y are interesting as background substances, needed to distinguish effects related to magnetic moments formation and ordering.…”