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Good storage properties after irradiation have been observed in doubly rare-earth-doped LiRESiO 4 :Ce 3+ ,Sm 3+ , RE=Y,Lu powders. We present strong arguments that in the studied materials Ce 3+ ions play a role of hole trapping and Sm 3+ ions of electron trapping centres. Additionally, oxygen vacancies are also involved in electron trapping, however they can...
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