An Insight into The Functional Properties of High-Entropy Perovskite Oxides

In recent years, there has been a surge of research interest in high entropy materials, driven by the potential to engineer their functional properties. High entropy materials, with their diverse elemental compositions, exhibit distinctive characteristics compared to conventional materials due to the intricate interplay of inter-elemental interactions, some of which cannot be predicted.<br/><br/>Among these materials, oxide perovskites stand out as a versatile material class with applications ranging from catalysis and solid-state fuel cells to oxide solar cells, rendering them particularly captivating for high-entropy investigations. Noteworthy studies have already shown the exceptional performance of high-entropy perovskite oxides in critical applications such as electrochemical catalysis, high-energy-density capacitors, and thermoelectric systems. The extensive array of perovskite systems, coupled with the immense spectrum of high-entropy cation combinations within them, opens up a vast domain of possibilities for such diverse applications.<br/><br/>In this talk, a comprehensive study of lanthanum-based perovskite-type oxides containing various compositions of transition elements (Co, Cr, Cu, Fe, Mn, Ni and Zn) at the B site is given, with the aim of studying the effects of the different cations on the properties of these materials. Various analysis techniques are used to characterize the optical and electronic behavior of these materials and thus enable further optimization for specific applications.