高等学校化学学报
高等學校化學學報
고등학교화학학보
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES
2001年
3期
368-370
,共3页
车裕禄%李莉萍%李广社%吕喆%林晓敏%向军%苏文辉
車裕祿%李莉萍%李廣社%呂喆%林曉敏%嚮軍%囌文輝
차유록%리리평%리엄사%려철%림효민%향군%소문휘
高温高压%价态%输运性质
高溫高壓%價態%輸運性質
고온고압%개태%수운성질
The solid solutions Ce1-xEuxO2-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 Eu3+ and trace of Ce4+ ions were reduced to Ce3+ ions during synthesis of high-temperature and high-pressure. The ionic conduction for Ce0.8Eu0.2O2-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 ℃.
