铈、镧掺杂BaTiO_3基纳米晶的合成与表征  

The Synthesis and Characterization of BaTiO_3-Based Nanocrystals Doped by Cerium or Lanthanium

作　　者：刘静波[1] 王智民[2] 郑春萍[2] 谷林夫 李文超[1] 

机构地区：[1]北京科技大学,北京100083 [2]黑龙江大学化学化工学院,黑龙江哈尔滨150080

出　　处：《功能材料》2000年第1期69-71,共3页Journal of Functional Materials

基　　金：黑龙江省自然科学基金

摘　　要：以非全醇盐为原料并避开传统的醇类有机溶剂 ,利用溶胶 -凝胶法以醋酸为介质兼作均相催化剂 ,按不同配比及工艺条件合成了分别掺杂铈或镧的BaTiO3基纳米晶。利用DTA-TG、XRD、FT -IR、XRF、SEM以及陶瓷元件气湿敏特性等测试手段对纳米晶进行了表征 ,确定了制备浓溶胶前驱体的优化工艺 :酸度、温度、浓度、配比、混合次序、干燥方式等 ;测定了多晶粉体的原始晶粒粒度、纯度、晶相、软团聚颗粒外观形貌、粒度分布等。The BaTiO 3-based nanocrystals doped by cerium or lanthanium were prepared with different prescriptions.Sol-gel technology was used without traditional alcohol solvents.The raw materials were alcoxide partly.The analysis-test methods such as DTA-TG,XRD,FT-IR,XRF,SEM and gaseous-humidity sensitivity were used in order to characterize the nanocrystals.The processing parameters were determined,for example:pH-value,temperature,concentration,prescription,drying-method.The primary crystal size,purity,crystal-phase,morphology,and particle size distribution were tested respectively.

关 键 词：掺杂 纳米晶 合成 表征 钛酸钡 

分 类 号：TM223[一般工业技术—材料科学与工程] TQ174.756[电气工程—电工理论与新技术]