摘要
用高温高压法合成了Sr1-xEuxTiO3(x=0.0,0.1,0.2,0.3,0.4,0.5)及Ba0.3Eu0.7TiO3化合物.结果表明,所有样品均为立方结构,样品中存在Eu(Ⅱ)和Eu(Ⅲ)的混合价.Eu3+的掺入直接影响了Sr离子与氧离子的结合,使Sr3p3/2的结合能随x的增加而增加.
The high pressure and high temperature method was first used to synthesize the compounds of Sr1-zEuxTiO3(x=0.0,0.1,0.2,0.3,0.4,0.5) and Ba0.3Eu0.7TiO3.The analysis of X-ray diffraction shows that all of the samples are in single phase and belong to cubic system.The measurement of XPS indicates tht there is a mixing valence of Eu(Ⅱ) and Eu(Ⅲ);and the interaction between Sr ion and oxygen anion was influenced by doping Eu3+and the binding energy of Sr is increased with x increasing.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1994年第8期1195-1198,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
高温
高压
合成
复合氧化物
钛
铕
Valence fluctuation
XPS
Synthesizing at high pressure and high temperature