On the system cerium–platinum–silicon

Formation and physical properties of a novel compound Yb3Pt23Si11

“…as the closely related compounds hitherto reported in the literature: Ce 3 Pt 23 Ge 11 [7,8], Ce 3 Pt 23 Si 11 [3][4][5][6], La 3 Pt 23 Si 11 [3], and U 3 Pt 23 Si 11 [9,10]. Whereas the crystal structure of Ce 3 Pt 23 Ge 11 was solved within space group F4 3m (No.…”

“…In this paper we report on the crystal structure of the new phase as well as on its magnetic, electrical and thermodynamic behavior at low temperatures. The structural and physical properties of Yb 3 Pt 23 Si 11 are compared with those of the related compounds: La 3 Pt 23 Si 11 [3], Ce 3 Pt 23 Si 11 [3][4][5][6], Ce 3 Pt 23 Ge 11 [7,8], and U 3 Pt 23 Si 11 [9,10].…”

Crystal structures of RPt3−xSi1−y(R=Y, Tb, Dy, Ho, Er, Tm, Yb) studied by single crystal X-ray diffraction

“…The as-cast alloys were vacuum-sealed in quartz tubes and annealed at 900 1C for 14 days before being quenched in cold water. These annealing conditions were chosen on the basis of our experience from previous studies of ternary systems: Yb-Pd-Si [8] and Ce-Pt-Si [9]. For example, for Ce-Pt-Si alloys it was difficult to reach equilibrium at 600 1C even after long time annealing (1 month), whilst samples annealed at 800 1C for 2 weeks were found to be in equilibrium [9].…”

“…These annealing conditions were chosen on the basis of our experience from previous studies of ternary systems: Yb-Pd-Si [8] and Ce-Pt-Si [9]. For example, for Ce-Pt-Si alloys it was difficult to reach equilibrium at 600 1C even after long time annealing (1 month), whilst samples annealed at 800 1C for 2 weeks were found to be in equilibrium [9]. X-ray powder diffraction (XPD) data were collected employing a Guinier-Huber image plate system with CuKa1-radiation (81o2yo1001) with Ge as a standard.…”

Metamagnetic behaviour of Nd3Pt23Si11

“…The Ce-Pt-Si phase diagram has triggered a lot of interest [1,2] because some cerium-based compounds present interesting physical properties such as; unconventional heavy fermion superconductivity in CePt 3 Si [3], heavy-fermion properties in CePtSi [4], Kondo lattice behaviour in CePtSi 2 and CePt 2 Si 2 [5,6] and most recently, the observation of unusual ferromagnetic ordering in Ce 3 Pt 23 Si 11 [7][8][9]. The compound Yb 3 Pt 23 Si 11 has been recently synthesized and was found to be a moderately enhanced paramagnetic compound with a fairly unstable 4f electronic shell [10].…”