高温高压合成的Ce_(1-x)Eu_xO_(2-δ)固溶体的价态和输运性质研究  

The Valence and Transport Property Studies for the Solid Solution Ce_(1-x) Eu_xO_(2-δ) Synthesized by High-temperature and High-pressure

作　　者：车裕禄[1] 李莉萍[1] 李广社[1] 吕喆[1] 林晓敏[1] 向军[1] 苏文辉[1] 

机构地区：[1]吉林大学物理系

出　　处：《高等学校化学学报》2001年第3期368-370,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 !(批准号 :1980 40 0 5 );吉林大学无机合成与制备化学教育部重点实验室基金!资助

摘　　要：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 ℃.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 ℃.

关 键 词：高温高压 价态 输运性质 合成 氧化锌 结构 复合氧化物固溶体 固体电解质 销 掺杂 

分 类 号：TM242[一般工业技术—材料科学与工程] O614.33[电气工程—电工理论与新技术]