Synthesis and Characterization of RTM₆ (R = Rare Earth, TM = Transition Metal) for Thermoelectric Applications

RTM₆ (R = Rare Earth, TM = Transition Metal) family of compounds have been reported to host quasicrystal approximants [1-2] as well as lattice features that allow for partially filled cavities [3]. Inspired by these results, we have synthesized a variety of f-electron analogues using the molten metal flux growth method, and structurally characterized them using the high-resolution transmission electron microscopy and X-ray diffraction techniques. We will report on the magnetic properties, electrical properties, and thermal transport properties of these materials with regards to their structure-property relationships and explore their potential as a new class of thermoelectric materials with better characteristics and performance for thermoelectric applications.

 

[1] Gomez, et. al. Physical Review B 68, 024203 (2003).

[2] Xia, et. al. Intermetallics 15, 550 (2007).

[3] Fornasini, et. al. Zeitschrift für Naturforschung B 63, 237-243 (2008).