节点文献
高温高压合成的Ce1-xEuxO2-δ固溶体的价态和输运性质研究
The Valence and Transport Property Studies for the Solid Solution Ce1-x EuxO2-δ Synthesized by High-temperature and High-pressure
【Abstract】 The solid solutions Ce 1- x Eu x O 2- δ ( x =0\^10—0\^50) were synthesized by high temperature and high pressure. The XRD measurement showed that the solid solution was crystallized in cubic fluorite type structure and the lattice parameter increased with the content of Eu increasing up to x =0.4. The solution limit was \%ca.\% 0.4 under the condition of 3.6 GPa, 840—1 020 ℃. The XPS data showed that the Eu ions are Eu 3+ and trace of Ce 4+ ions were reduced to Ce 3+ ions during synthesis of high temperature and high pressure. The ionic conduction for Ce 0.8 Eu 0.2 O 2- δ was measured by impedance spectroscopy and it was found that the activation energy was 1.07 eV and the conductivity was 3.43×10 -5 S·cm -1 at 550 ℃.
【Key words】 High temperature and high pressure; Valence state; Transport property;
- 【文献出处】 高等学校化学学报 ,Chemical Research In Chinese Universities , 编辑部邮箱 ,2001年03期
- 【分类号】O611
- 【被引频次】4
- 【下载频次】70