La1xSrxO3

La1xSrxO3, often written as La$_{1-x}$Sr$_x$O$_3$, refers to a family of perovskite oxide materials where lanthanum (La) is partially substituted by strontium (Sr) on the A-site of the perovskite structure, with an oxygen (O) anion. The 'x' represents the doping concentration, indicating the fraction of strontium substituting for lanthanum.

These materials are known for their electrical and catalytic properties, making them of interest in various scientific and technological applications. The substitution of Sr$^{2+}$ for La$^{3+}$ introduces charge carriers into the material, typically leading to p-type conductivity. The specific electrical conductivity and other properties are highly dependent on the value of 'x', the synthesis method, and the crystallographic structure.

La$_{1-x}$Sr$_x$O$_3$ and related lanthanum strontium oxides have been investigated for use in solid oxide fuel cells (SOFCs) as electrode materials, particularly as cathodes. Their thermal stability and oxygen ion conductivity at elevated temperatures are advantageous for these applications. Additionally, their catalytic activity has led to research into their use as catalysts for oxidation reactions, including the oxidation of volatile organic compounds (VOCs) and the decomposition of pollutants.

The precise stoichiometry and crystal structure of La$_{1-x}$Sr$_x$O$_3$ can vary, influencing its physical and chemical behavior. Research continues to explore the correlation between doping levels, structural characteristics, and performance in different applications to optimize their properties.