Infrared spectroscopic analysis of OH− and OD− in crystalline Li2O as a function of chemical treatment

Dynamic observation of the behavior of 3keV irradiated into Li2O using IR absorption spectroscopy

“…This technique can identify the existence states of hydrogen isotopes in metal oxides [22], because O-H, which is a major chemical form of hydrogen isotopes, exhibits multiple IR absorption peaks reflecting the surrounding conditions, such as the proximate existence of a defect. In the case of Li 2 O, several O-D peaks have been reported both on the surface [23,24] and in the bulk [25][26][27][28], and some of them have been assigned to O-Ds interacting with point defects [24,26]. In the present study, the IR absorption analysis was combined with the ion implantation technique, and an in situ measurement was performed during 3 keV D þ 2 irradiation.…”

Observation of multiple O–D vibration peaks in Li2O using FT-IR

“…Three peaks corresponding to various O-D stretching vibration were observed, and two of them were related to the O-D bonds in the bulk: (i) O-D bond existing as LiOD phase [7] and (ii) O-D bond without forming the LiOD phase and with interaction with vacancies [8]. In the present work, the Li 2 O sample was heated up to 453 K after the 3 keV D þ 2 irradiation.…”

FT-IR study on interaction of irradiated deuteron with defects in Li2O

“…The large peak, which was observed at 2715 cm À1 after the annealing, was attributed to O-D in the LiOD phase as identified in previous reports [1,7]. This means that the irradiated deuteron moved and aggregated into the LiOD phase during the annealing procedure.…”