单相Sm掺杂BaTiO3陶瓷的结构研究  

Structure of Single-phase Sm-doped BaTiO3 Ceramics

作　　者：刘巧丽 刘军伟 王辰 路大勇 LIU Qiao-li;LIU Jun-wei;WANG Chen;LU Da-yong(School of Material Science and Technology,Key Laboratory for Special Functional Materials in Jilin Provincial Universities,Jilin Institute of Chemical Technology,Jilin 132022,Jilin,China)

机构地区：[1]吉林化工学院材料科学与工程学院,吉林省特种功能材料重点实验室,吉林吉林132022

出　　处：《有色金属（冶炼部分）》2020年第3期75-78,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：吉林省发改委项目(2019C044-1)。

摘　　要：采用高温固相反应法,在1 400℃/12h烧结条件下制备了具有Ti空位补偿的Ba1-xSmxTi1-x/4O3(BST;x=0.02~0.07)陶瓷。利用XRD对BST陶瓷的晶体结构进行表征,并在532和638nm两种激发波长下对其进行拉曼光谱测试。结果表明:当x≤0.07时,所有的BST陶瓷均表现为单相钙钛矿结构,并且随着Sm含量的增加,其晶体结构由四方相(x≤0.06)转变为立方相(x=0.07);不同激发波长下的拉曼测试证实高频谱来自稀土Sm^3+的荧光效应。Ba1-xSmxTi1-x/4O3(BST)(x=0.02-0.07)ceramics with Ti vacancy compensation were prepared using high temperature solid state reaction at 1 400 ℃/12 h.Crystal structure of BST ceramics was characterized by XRD,and Raman spectra were measured at 532 and 638 nm excitation wavelengths.The results show that all samples are single-phase perovskite structure when x≤0.07,and crystal structure changes from tetragonal(x≤0.06)to cubic(x=0.07).Raman spectra excited by different lasers confirm that high-frequency spectra are related to fluorescent effect of Sm^3+.

关 键 词：钛酸钡 钐掺杂 单相 荧光效应 

分 类 号：TB34[一般工业技术—材料科学与工程]