Patent ID: 8410446
Filing Date: 2013-04-02
Classification: C01F,C01G,C04B,C09K,G01T,G21K

Abstract:
1. A fluorescent material comprising: Ce, the Ce acting as an activator; at least Gd, Al, Ga, O, Fe, and a component M; wherein the component M is at least one of Mg, Ti, Ni; wherein the composition of the material is expressed by the general formula: wherein 0≦a≦0.15, 0≦x≦0.5, 0.0003≦z≦0.0167, 0.2≦u≦0.6, and 0≦s≦0.1;and wherein, regarding the concentrations of Fe and the component M, 0.05≦Fe concentration (mass ppm)≦1, and 0≦M concentration (mass ppm)≦50.