摘要
利用固相反应合成了稀土取代的复合氧化物Ｅｕ_（０．５）ＲＥ_（０．５）Ｆｅ_（０．５）Ｍｎ_（０．５）Ｏ_３（ＲＥ＝Ｌａ，Ｐｒ，Ｎｄ，Ｓｍ，Ｇｄ，Ｔｂ，Ｄｙ，Ｈｏ，Ｅｒ，Ｔｍ，Ｙｂ）．测量了这些化合物的ＸＲＤ和ＸＰＳ谱。在ＸＰＳ研究中发现，稀土取代而使稀土元素本身的结合能相对于其倍半氧化物中的有所降低；在取代的复合氧化物中，随着ＲＥ离子半径的减小，Ｆｅ、Ｍｎ的结合能随之增加。
Complex oxides replaced by rare earth ions, Eu0.5RE0.5Fe0.5Mn0.5O3(RE=La, Pr,Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb) were prepared by the solid state reaction method.Measurements by XRD and XPS were carried out. The study of XPS indicates that the replacement by rare earth causes the decrease of the binding energy(B. E. )of rare earth ions,compared to their sequioxides. And in the replaced oxides, the binding energy of Fe2p3/2 and Mn2p3/2 increases with the decrease of ion radius of RE ion. The reasons for the changes of B.E. are discussed.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第3期454-458,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
XPS
稀土
过渡元素
复合氧化物
Eu0.5RE0.5Fe0.5Mn0.5O3, XPS, Changes of binding energy
