ENDOR investigations of the Ce~(3+) ions in YAG: Transferred hyperfine interaction with nearest aluminum ions

摘要

The transferred hyperfine interactions of Ce~(3+) centers with ~(27)Al neighbor nuclei in heavily cerium doped yttrium aluminum garnet (YAG) are resolved using Pulsed-Electron Nuclear Double Resonance (Pulsed-ENDOR). It is demonstrated that substitution of Ce~(3+) for Y~(3+) in YAG crystals leads to the strong reduction of the nuclear quadrupole coupling at the tetrahedral aluminum d-sites (e~2qQ/h ≈ 4.67 MHz).