Tb_2O_3对磁光玻璃形成区及物理化学性质的影响  

Effects of Tb_2O_3 on Glass-Forming Region and Physicochemical Properties of Magneto-Optical Glass

作　　者：殷海荣[1] 章春香[1] 刘立营[1] 唐保军[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

出　　处：《中国稀土学报》2009年第1期57-62,共6页Journal of the Chinese Society of Rare Earths

基　　金：国家十一五科技支撑计划重大项目(2006BAF02A26)资助

摘　　要：以分析纯的氧化铽、氢氧化铝、氧化硅和硼酸等为主要原料,采用传统熔融冷却工艺制备了硼硅酸盐系稀土Tb2O3磁光玻璃,讨论了Tb2O3对玻璃形成区及物理化学性质的影响。采用示差扫描量热仪(DSC)、自制的Verdet常数测试设备和紫外/可见/近红外分光光度计(UV/VIS/NIR)对玻璃的特征温度、Verdet常数和吸收光谱进行表征。结果表明:Tb3+离子的掺入量受玻璃形成区域的限制,在Tb2O3含量为30%(摩尔分数)时,玻璃形成能力较强,热稳性好;玻璃密度和Verdet常数均与Tb3+离子浓度近似成线性关系;稀土玻璃吸收峰位置只与稀土离子种类有关,吸收峰强度随Tb2O3含量的增加而增强。The borosilicate magneto-optical glasses containing Tb2O3 were prepared by traditional fusion method, using terbium oxide （Tb4O7 ）, silicon oxide （ SiO2 ）, aluminum hydroxide （ Al （HO） 3 ） and boracic acid （ H3 BO3 ） of analytical purity as raw materials. The effects of Tb2O3 on glass-forming region and physicochemical properties of magneto-optical glass were discussed emphatically. The characteristic temperature, Verdet constant and absorption spectrum were characterized by differential scanning calorimetry （DSC）, self-made device and UV/VIS/NIR spectrophotometer. The results showed that the content of Tb^3＋ was restricted by the glass-forming region. The glass-forming ability and thermal stability of borosilicate glass were preferable with the content of 30% Tb2O3. The density and Verdet constant of borosilicate glass were linear basically with the concentration of Tb^3＋ respectively. Also, the positions of absorption peaks of glasses containing rare earth were related with ionic species, and the intensities of absorption peaks were increased with the increment of Tb2O3.

关 键 词：氧化铽 磁光玻璃 玻璃形成区 物理化学性质 稀土 

分 类 号：TQ171[化学工程—玻璃工业]