This research project aims to study intermetallic compounds with thermoelectric properties using X-ray techniques from synchrotron radiation and conventional X-ray sources. We intend to study structural and magnetic properties of new intermetallic compounds with structural cages containing atoms that can scatter acoustic phonons. These materials have strong interest for technological applications in thermoelectricity. The samples are clathrates compounds of the R3M20N6 family, skutterudites compounds RM4Sn12 and Rameida compounds R3M4T13 (with R=rare earth, M=transition metal and T=Sn, In). The samples will be available through a collaboration with Prof. Dr. Pascoal G. Pagliuso (Group of Optical and Magnetic Properties of Solids - GPOMS - DEQ / IFGW / UNICAMP) and Prof. Dr. Marcos Ávila (Federal University of ABC - UFABC). The project involves structural measurements of mono and polycrystalline samples at low temperature (T ~ 2 K) as well as measurements of magnetic X ray diffraction using synchrotron radiation and also the use of other spectroscopic techniques with synchrotron radiation. A feasibility study to perform time resolved x-ray diffraction experiments on these compounds is also planned to obtain dynamical information of the atoms in the strucutural cages of these compounds.
News published in Agência FAPESP Newsletter about the scholarship: