This study aims to synthesize and characterize the crystal structure of LaMnO3-based perovskite materials with multi-component substitution to evaluate the effect of compositional variation on phase formation, lattice parameters, crystallite size, and lattice strain. The research was conducted at PRMM, BJ Habibie Science and Technology Area (KST), BRIN, Serpong, from late 2024 to early 2025 as …