Structure and physical properties of CeSbTe

• Published in: Journal of alloys and compounds 2001-01, Vol.314 (1), p.132-139
• Main Authors: Wang, Ying C, Poduska, Kristin M, Hoffmann, Roald, DiSalvo, Francis J
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Electron density of states and band structure of crystalline solids; Electron states; Electronic band structure; Exact sciences and technology; Halides, chalcogenides and analogous compounds of group vb; Inorganic compounds; Physics; Rare earth metal; Semiconductor compounds; Square net; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Telluride; Thermoelectric
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/S0925-8388(00)01233-0

The structure of CeSbTe was determined by the Rietveld refinement method using powder X-ray diffraction ( R p =6.22% and wR p =8.74%). CeSbTe adopts the PbFCl structure type and crystallizes in the space group Pnma (No. 62) of the orthorhombic system with Z=4 and a=19.0404(6) Å, b=4.3520(1) Å, c=4.3660(2) Å, V=361.78(2) Å 3. It can be viewed as a layered compound which contains an Sb −1 layer distorted from a perfect square net into zig-zag chains. Both its crystallographic and electronic structure indicate a 2-D character. Based on transport properties and band structure calculations, CeSbTe is a metal with a low carrier concentration. Additionally, it exhibits paramagnetic behavior typical of Ce 3+.