The study of doped transition metal oxides with strong correlated physical properties is among the main research fields in condensed matter. The richness of physical properties observed on these materials is due to the strong correlation between spin, charge, and lattice degrees of freedom. In this project, two families of doped manganese oxides are of interest: the manganites R1-xAxMnO3 and multiferroic RMn2O5 (R = rare earth; A = Alkaline) compounds. In general, all the important physical effects are much more pronounced in the vicinity of a phase transition (magnetic, electronic, or structural), where an application and/or alteration of the thermodynamic parameters (structure, magnetization, heat capacity, electrical and thermal transport) change the balance between phases or correlation length depending on the nature of each phase transition. Therefore, one of the aims of this project is to perform a systematic study of the physical properties in the vicinity of the phase transition observed on those two families. Furthermore, the electrical transport mechanism at high temperature is also of interest. To accomplish this task, a homemade apparatus with this capability will be build.
News published in Agência FAPESP Newsletter about the scholarship: