Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1234608 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2008 | 5 Pages |
Abstract
The effects of gamma-irradiation on the air-annealed 10 at.% Yb:Y3Al5O12 (YAG) and air annealing on the gamma-irradiated 10 at.% Yb:YAG have been studied by the difference absorption spectra before and after treatment. The gamma-irradiation and air annealing led to opposite changes of the absorption properties of the Yb:YAG crystal. After air annealing, the gamma-irradiation induced centers were totally removed and the concentration of Fe3+ and Yb3+ were lightly increased. For the first time, the gamma-irradiation induced valence changes between Yb3+ and Yb2+ ions in Yb:YAG crystals have been observed.
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Authors
Xionghui Zeng, Xiaodong Xu, Xiaodan Wang, Zhiwei Zhao, Guangjun Zhao, Jun Xu,