Hyperfine Structure and Exchange Coupling of Vacancy-Induced Ce${}^{3+}$ Spin Centers in Nuclear-Spin-Dilute CeO${}_2$

T. M. Chithresh, Rudra Banerjee

Oxygen vacancies in ceria CeO${}_2$ donate electrons that localize as Ce${}^{3+}$ ($4f^1$, $S=1/2$) small polarons, creating rare-earth spin centers through native defect chemistry rat…