掺铕ATO纳米粉体的制备及表征  

Preparation and Characterization of Europium doped ATO Nano-Functional Materials

作　　者：朱福良[1] 黄秀扬[1] 张霞[1] 余细波[1] 

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃兰州730050

出　　处：《中国稀土学报》2011年第4期468-473,共6页Journal of the Chinese Society of Rare Earths

基　　金：甘肃省自然科学基金(3ZS042-B25-029);兰州理工大学科研发展基金资助项目(0851)

摘　　要：采用化学共沉淀法制备了掺杂稀土铕的ATO纳米粉体。运用X射线衍射(XRD)、扫描电镜(SEM)等测试方法对ATO粉体进行表征,研究了制备工艺对粉体粒径和导电性能的影响,发现铕的摩尔掺杂比在0.5%～1%之间,600～700℃热处理温度下得到粉体的性能最佳,粉体的电阻率为243Ω.cm,颗粒尺寸为33.6 nm。掺杂前粉体的电阻率和颗粒尺寸分别为181Ω.cm和41.4 nm,掺杂后分别为243Ω.cm和33.6 nm。结果显示掺杂铕会使粉体的电阻率增加,但也能降低粒径,减少团聚。The rare-earth doped ATO nano-functional powders were prepared by chemical co-precipitation method.The different measurements such as XRD and SEM were performed to characterize ATO powders.Based on the results of those measurements,the effects of ATO powders on particle size and conductive properties were systematically investigated,and the ATO powders prepared at the temperature of 600～700℃ and n（Eu）/n（Sn） ration of 0.5%～1% had better performance.The powder with Eu prepared on this condition had the resistivity of 243 Ω·cm and the particle size of 33.6 nm,and the powder without Eu had the resistivity of 181 Ω·cm and the particle size of 41.4 nm.An analysis and a comparison were made of the powder with or without Eu in respect of the resistivity and particle size.The results showed that the Eu-doped powder had larger resistivity,remarkably smaller particle size and less agglomeration.

关 键 词：掺杂Eu 共沉淀法 ATO 纳米粉体 稀土 

分 类 号：TB34[一般工业技术—材料科学与工程] TQ134.32[化学工程—无机化工]