Abstract
The crystal structure of the novel compound Ce3Rh5Si was solved by means of powder diffraction pattern analysis using the charge-flipping method. The refinements yielded the space group Pnma and the orthorhombic unit cell parameters: a=1.52632(2)nm, b=0.55092(1)nm, and c=0.75302(1)nm. A characteristic feature of the crystal structure of Ce3Rh5Si are vertex-sharing [Rh4] and [Rh3Si] tetrahedra, which form a three-dimensional framework with Ce atoms located inside truncated tetrahedral voids. The structure exhibits close relationship with those of CeRh2 (MgCu2-type) and Ce2Rh3Si (Y2Rh3Si-type). Magnetic and electrical resistivity measurements of Ce3Rh5Si were performed down to 2K. The compound was characterized as a Pauli paramagnet with metallic character of the electrical conductivity.
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