| 摘要 |
A fluorescent material having a composition formula represented as (Gd 1-±-²-³ L ± Ce ² Tb ³ ) 3+a (Al 1-u-v Ga u Sc v ) 5-b O 12 (L is at least one element selected from Y and Lu), satisfying the following ranges: 0‰¤a‰¤0.1, 0‰¤b‰¤0.1, 0‰¤±‰¤0.3, 0.0003‰¤²‰¤0.005, 0.02‰¤³‰¤0.2, 0.27‰¤u‰¤0.75, and 0‰¤v‰¤0.02. Preferably, 0<a‰¤0.07, 0<b‰¤0.07, 0<±‰¤0.15, 0.0003‰¤²‰¤0.004, 0.03‰¤³‰¤0.15, 0.35‰¤u‰¤0.70, and 0‰¤v‰¤0.02. |
