| Popis: |
A new compound ErPt4In4 was synthesized by arc melting and its crystal structure was determined from the single crystal X-ray diffraction data: space group P63/mmc, a = 4.5321(9) A, c = 19.807(13) A, Pearson symbol hP18. The new structure type is composed of condensed via side edges Er-centered polyhedra [Pt8In6] and the corrugated slabs of In atoms alternating in the c-direction. A few isostructural compounds were found to form with Gd–Lu, and Y. The low-temperature physical properties of TbPt4In4, DyPt4In4 and YbPt4In4 were characterized by means of magnetic susceptibility and electrical resistivity measurements. All three compounds exhibit Curie–Weiss paramagnetism, due to the presence of well localized magnetic moments carried on trivalent rare-earth atoms, and metallic character of their electrical conductivity. The compounds TbPt4In4 and DyPt4In4 order magnetically below 8 and 5 K, respectively, whereas YbPt4In4 remains paramagnetic down to 1.7 K. |
Full Text from ScienceDirect