He is best known for his pioneering work on Solid-state chemistry, where his work on oxidation rate theory, counter diffusion of ions and defect chemistry led to a better understanding of how reactions take place at the atomic level.
He is best recognized for his pioneering work in Solid-state chemistry, specifically due to his studies on oxidation rate theory, counterdiffusion of ions, and defect chemistry, leading to a greater grasp of atomic-level reaction mechanisms.