Ge, Wanyin; Zhu, Wenliang; Higashino, Masayuki; Li, Yongxiang; Yi, Zhiguo; Pezzotti, Giuseppe
Spectrally resolved cathodoluminescence measurements of Bi₅ˍₓLaₓTiNbWO₁₅(x=0–1.50) ceramics at room temperature showed three distinct luminescence bands located at about 380, 502, and 660nm, respectively, which were tentatively assigned to F+ center, oxygen vacancy-related defect and octahedron structure-related luminescence center, respectively. These assignments could be made in light of electron irradiation experiments with different exposure times. Bands related to oxygen vacancies were...[Show more]
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