Structural and Thermoelectric Properties of Bi1−xSbx Nanoalloys Prepared by Mechanical Alloying

• Main Authors: Landschreiber, Bernadette, Güneş, Ekrem, Homm, Gert, Will, Christian, Tomeš, Petr, Rohner, Christian, Sesselmann, Andreas, Klar, Peter J., Paschen, Silke, Müller, Eckhard, Schlecht, Sabine
• Format: Conference Proceeding
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Conductivity phenomena in semiconductors and insulators; Cross-disciplinary physics: materials science; rheology; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Electronic transport in condensed matter; Electronic transport phenomena in thin films and low-dimensional structures; Electronics and Microelectronics; Exact sciences and technology; Instrumentation; Materials Science; Methods of nanofabrication; Nanoscale materials and structures: fabrication and characterization; Optical and Electronic Materials; Other topics in nanoscale materials and structures; Physics; Solid State Physics; Thermoelectric and thermomagnetic effects; Thermoelectric effects
• ISSN: 0361-5235; 1543-186X
• DOI: 10.1007/s11664-012-2455-1

Bi 1− x Sb x nanoparticles were prepared by mechanical alloying and compacted using different techniques. The influence of the composition as well as the pressing conditions on the thermoelectric performance was investigated. A strong dependence of the thermoelectric properties on the composition was found, which deviates from the behavior of single crystals. The results indicate a significant change in the band structure of the material induced by the reduced size. The influence of the pressing conditions on the thermoelectric properties also showed composition dependence. The results show that the compacting method has to be chosen carefully.