Topotactic lattice healing: A post-growth strategy for eliminating persistent oxygen vacancies in La0.67Sr0.33MnO3 films
Oxygen vacancies in complex oxide films often obscure intrinsic physics and degrade functional performance. Here, we report a post-growth defect-healing strategy via sequential vacuum/oxygen annealing. This process drives a reversible perovskite–brownmillerite topotactic phase transition, effectively eliminating persis...