（Sr，Ba）_（1－x）Eu_xTiO_3的高温高压合成及XPS研究

Synthesis of(Sr,Ba)1-xEuxTiO3 at High Pressure and High Temperature and Its XPS study

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.