铕掺杂BaPbO_3的EXAFS研究

EXAFS Research of Eu Doping BaPbO 3

采用扩展Ｘ射线吸收精细结构（ＥＸＡＦＳ）方法，研究了铕掺杂ＢａＰｂＯ３多晶粉末中Ｅｕ、Ｐｂ两种原子的近邻结构。Ｅｕ的掺杂，导致八面体中金属Ｐｂ、Ｅｕ的配位数降低。结合ＸＲＤ、ＩＣＰ分析，证明了铕掺杂ＢａＰｂＯ３中。

Neighbor structure of Pb、 Eu atom in the polymorphic powder of Eu doping BaPbO 3 was studied by EXAFS. The coordination number of Pb, Eu in the centre of orctehedron was decreased as Eu doping BaPbO 3. Combined the ICP and XRD results, it has been proved that Eu 3+ replaced Pb 4+ with the occurrence of oxygen vacancies in the system of Eu doping BaPbO 3.