ELECTRICAL PROPERTIES OF NONSTOICHIOMETRIC URANIUM DIOXIDE
Journal Article
·
· Journal of Chemical Physics (U.S.)
Electrical conductivity and thermoelectric power measurements were made on nonstoichiometric UO/sub 2/ at temperatures of 500-1150 deg C. The conductivity data in the single phase UO/sub 2+x/ region can be represented by the equation sigma (ohm cm)/sup -1/ = (3.8 x 10/sup 6/)/T(2x)(1 - 2x) expSTA(- o.3 plus or minus 0.03 ev)/kT!. An approximate equation for the thermoelectric power Q, is Q =(k/e) In (1 -2x/2x). The electrical measurements confirm the ionic theory of nonstoichiometry in UO/sub 2/, postulated on the basis of thermodynamic evidence. Nonstoichiometric UO/sub 2/ is a relatively simple ionic solid in which activated electronic hole transfer occurs between U/sup 5+/ and U/ sup 4+/ ions in the lattice. (auth)
- Research Organization:
- Westinghouse Electric Corp., Pittsburgh
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-001765
- OSTI ID:
- 4819399
- Journal Information:
- Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Vol. Vol: 35; ISSN JCPSA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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