and analysis of oxygen diffusion in PuO and (Pu,U)OKato, Masato 
; Uchida, Teppei; Sunaoshi, Takeo*
It is well known that PuO
having fluorite structure is non-stoichimetric compound. Stoichiometry significantly affects physical properties such as lattice parameter, diffusion coefficient and thermal conductivity. In previous work, oxygen potential of PuO was determined as functions of O/M ratio and temperature, and the data was analyzed based on defect chemistry. This result shows that the defect cluster of oxygen vacancy is stable in non-stoichiometric PuO. In this work, chemical diffusion of the defect was investigated in PuO. The thermo gravimeter was employed for the measurement. The O/M ratio was estimated from the weight change of the specimen. The time dependence of O/M change was analyzed, and chemical diffusion coefficient was determined as a function of temperature. The measured data was compared with that of MOX which was reported in previous work. The diffusion coefficient decreased with Pu content.
Language |
: | English |
|---|---|---|
Journal |
: | |
Volume |
: | 10 |
Number |
: | 2 |
Pages |
: | p.189 - 192 |
Publication Year/Month |
: | 2013/02 |
Meeting title |
: | 2012 International Conference on Defects in Insulating Materials (ICDIM 2012) |
Held date |
: | 2012/06 |
Location (city) |
: | Santa Fe |
Location (country) |
: | U.S.A. |
Paper URL |
: |
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Keywords |
: | no keyword |
Research Facility |
: |
Accesses |
: |
- Accesses |
|---|---|---|
InCites™ |
: |
Percentile:89.82 Category:Materials Science, Multidisciplinary |
Altmetrics |
: |
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