Sm掺杂SrTiO_3粉体的制备及其性能表征  

Powder Preparation and Characterization of Samarium Doped Strontium Titanate

作　　者：黄永珍[1] 程继贵[2] 

机构地区：[1]安徽职业技术学院材料系,合肥230051 [2]合肥工业大学材料科学与工程学院,合肥230009

出　　处：《武汉理工大学学报》2012年第10期9-13,共5页Journal of Wuhan University of Technology

基　　金：安徽省自然科学基金(070414186);日本板销子材料工学助成会基金(070304B2);安徽省高等学校省级质量工程基金(20101492)

摘　　要：以溶胶凝胶法制得的干凝胶为原料,通过煅烧、研磨得到Sr1-1.5xSmxTiO3粉体,采用TEM、XRD、BET分析手段,对在不同条件下获得粉体的形态和结构进行表征。结果表明,Sr1-1.5xSmxTiO3粉体颗粒细小、均匀,其相组成、形貌、粒度受煅烧温度和Sm2O3掺入量的影响。煅烧温度1 200℃,Sm2O3掺入摩尔质量为4%时,粉体形成单一的钙钛矿结构,所得粉体粒径为1.77μm。Sr1-1.5xSmxTiO3 powders have been successfully prepared by calcining and grinding process with Sm2O3,TiO2 and SrCO3 powders which is prepared by sol-gel.Morphological and structural evolution of Sr1-1.5xSmxTiO3 powders have been investigated by transmission electron microscopy（TEM）,X-ray diffraction and BET adsorption analyses.The result shows that the powder particles is fine and homogeneous.Its phase composition,morphology,particle size is decided by the calcination temperature and mixing amount of Sm.When calcination temperature is 1 200 ℃ and Sm mixing amount is 4%,the powder can form a single perovskite structure.Its powder particle size is 1.77 μm.

关 键 词：钐 钛酸锶 凝胶浇注法 粉体性能 

分 类 号：TM911.46[电气工程—电力电子与电力传动]