稀土－铌（钽）复合溴氧化物的结构与光谱特性

Structure and Spectral Properties of RE3+(RE=Eu,Tb,Pr,Sm)in La-Nb(Ta) Complex Bromoxide

用高温固相法合成了系列化合物ＲＥ０．０６Ｌａ０．９４Ｍ２Ｏ６Ｂｒ（Ｍ＝Ｎｂ，Ｔａ；ＲＥ＝Ｅｕ，Ｔｂ，Ｐｒ，Ｓｍ），并测定了其激发和发射光谱，室温下Ｅｕ３＋、Ｔｂ３＋、Ｐｒ３＋、Ｓｍ３＋在稀土－铌（钽）复合溴氧化物中呈现特征激发谱线，但Ｎｂ和Ｔａ的光谱特性稍有不同．

A series of compounds,REO0.06La0.94M2O6Br(M=Nb,Ta;RE=Eu,Tb,Pr, Sm),have been synthesized by solid reaction method at high temperature,and their excitation and emission spectra have been measured. The Eu3+, Tb3+,Pr3+ and Sm3+in La-Nb(Ta)complex bromoxide showed the characteristic excitation and emission lines at room temperature.However,the spectral properties at Nb compounds are lightly different from that Ta compounds.