高Tb^(3+)离子含量磁光玻璃的Faraday效应及发光性能  

Faraday Effect and Luminescence Properties of Magneto-optical Glasses With High Tb^(3+) Content

作　　者：刘盼[1] 殷海荣[1] 张红林 郭宏伟[1] 

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021 [2]咸阳非金属矿研究设计院有限公司研发设计中心,陕西咸阳712021

出　　处：《发光学报》2015年第3期293-298,共6页Chinese Journal of Luminescence

基　　金：国际科技合作计划(2009DFR50520);国家自然科学基金(51472151);陕西省教育厅产业化项目(2013JC-22)资助

摘　　要：采用高温熔融法制备了高Tb3+离子含量的Ge O2-B2O3-Si O2系统磁光玻璃,测试了其Verdet常数和发光性能,探究了玻璃的Faraday效应、发光性能及光学碱度。研究结果表明:Verdet常数和光学碱度均随着Tb2O3含量的增加而线性增大,当Tb2O3摩尔分数为70%时,Verdet常数达到-5 000 min·T-1·cm-1(632.8nm),所有磁光玻璃样品随Tb2O3含量变化均发出明亮的黄绿光。由于浓度猝灭效应,高Tb2O3含量缩短了Tb3+离子间距,增强了交叉弛豫效应,降低了发光强度和荧光寿命。GeO2-B2O3-SiO2 magneto-optical glasses with high Tb^3＋ content were prepared by high temperature melting technique. The effect of Tb3＋ content on the Faraday effect, luminescent prop-erties and optical basicity was studied. The results show that Verdet constant and optical basicity in-crease with the increasing of Tb2O3 content. All samples emit bright greenish-yellow luminescence, and the glass has a higher Verdet constant of -5 000 min·T^-1 ·cm^-1 at 632. 8 nm when the mole fraction of Tb2O3 is 70%. The distances among Tb3＋ ions become shorter with the increasing of Tb2 O3 content due to the concentration quenching effect, therefore, the cross-relaxation effect is en-hanced, and the effective luminous intensity and lifetime decrease.

关 键 词：磁光玻璃 光学碱度 TB^3+ 光致发光 

分 类 号：O482.31[理学—固体物理]