Electrical conductivity of the system Y2O3CeO2

✍ Scribed by Keu Hong Kim; Jong Ho Jun; Jae Shi Choi

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 514 KB
• Volume: 46
• Category: Article
• ISSN: 0022-3697
• DOI: 10.1016/0022-3697(85)90146-5

✦ Synopsis

The electrical conductivity of the system Y203-Ce02 was measured in the temperature range 500-1100°C and PO, range IO-'-IO-' atm. Possible defect models were suggested on the basis of conductivity data, which were investigakd as a function of temperature and of PO,. The observed activation energies were 0.40 eV and 1.79 eV in the low-and high-temperature regions, respectively. The observed conductivity dependences on Pal were o K Pg in the temperature range 500-75O'C and c cc Pg.' at temperatures from 750-I 100°C. It is suggested that the system Y203-Ce02 shows a mixed ionic plus hole conduction due to an 0: defect and an electronic hole conduction due to a V+ defect in the low-and high-temperature regions, respectively.