| 摘要 |
Provided is a light emitting ceramic such as a wavelength conversion ceramic or a radiation-to-light conversion ceramic, which emits light when radiation or light enters the ceramic, and which has a short light emission decay time. The light emitting ceramic is obtained by applying a heat treatment in a reducing atmosphere to a ceramic containing, as its main constituent, a pyrochlore compound represented by ABOw where A includes at least one of La, Y, Gd, Yb, and Lu, and 0 to 5 mol % of Bi; B is at least one of Sn, Zr, and Hf; and w is a positive number for maintaining electroneutrality. |
