KCaF_3中Eu^(2+)的光谱性质和价态稳定  

LUMINESCENCE PROPERTIES AND VALENCE STABILITY OF EUROPIUM(Ⅱ) IN KCa F_3

作　　者：刘应亮[1] 石春山[2] 

机构地区：[1]暨南大学化学系,广州510632 [2]中国科学院长春应用化学研究所希土化学与物理开放实验室,长春130022

出　　处：《无机化学学报》1996年第2期172-177,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金资助项目

摘　　要：本文报道 KCa F3 基质中 Eu2 +的光谱特征及浓度对 Eu2 +发光的影响并观察到 Eu2 +对 Tb3 +产生能量传递的新现象 ,详细讨论 Eu2 +在基质中的价态稳定及其转换。L uminescence propertiesof Eu2 +and effectofdoped concentration on luminescenceof Eu2 + are reported. A new phenomemon of energy transfer from Eu2 +to Tb3 +in KCa F3 was observed. Valence stability of Eu2 +in KCa F3 is considered by susceptibility method and spectral analysis. The results show that though valence of Eu2 +in KCa F3 is stable,Eu2 +ions easily change into Eu3 +in KCa F3 in the presence of minimal water.

关 键 词：氟化钙钾 铕 光谱性质 价态稳定 

分 类 号：O614.338[理学—无机化学] O433[理学—化学]