Oxygen stoichiometry, crystal structure, and magnetism in La${}_{0.5}$Sr${}_{0.5}$CoO${}_{3-\delta }$

Ryan P. Haggerty, Ram Seshadri

We have prepared a series of polycrystalline samples La${}_{0.5}$Sr${}_{0.5}$CoO${}_{3-\delta }$} with $0<\delta \le 0.21$ and characterized their oxygen content, crystal structure, and magnetic p…