LaSrCoO3

LaSrCoO3 is a perovskite oxide with the chemical formula La1-xSrxCoO3. This material is a mixed-valence cobaltate, meaning the cobalt atoms exist in multiple oxidation states, typically Co3+ and Co4+. The strontium doping, represented by 'x', is crucial for its interesting electronic and magnetic properties. Pure LaCoO3 is an insulator, but substituting strontium for lanthanum introduces holes and metallic conductivity.

The crystal structure of LaSrCoO3 is based on the perovskite framework, where a corner-sharing network of oxygen octahedra surrounds a central cation site. In this case, the A-site is occupied by a mixture of lanthanum and strontium ions, while cobalt occupies the B-site. The arrangement of oxygen atoms and the mixed-valence cobalt ions lead to complex magnetic ordering, often exhibiting ferromagnetism or paramagnetism depending on the strontium concentration and temperature.

LaSrCoO3 and its related compounds have attracted significant research interest due to their potential applications. Their electrical and magnetic properties make them candidates for use in thermoelectric devices, magnetic sensors, and as catalysts, particularly in oxidation reactions. The tunability of their properties through doping and synthesis conditions allows for tailored material design for specific technological needs.