Structural stability and conductivity of cubic (WO3)x - (Dy2O3)y-(Bi2O3)1?x?y |
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Authors: | Su-Ho Jung Eric D Wachsman Naixiong Jiang |
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Institution: | (1) Department of Materials Science and Engineering, University of Florida, 32611-6400 Gainesville, FL, USA;(2) Materials Research Center, SRI International, 94025 Menlo Park, CA, USA |
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Abstract: | Isovalent rare earth oxide cubic stabilized bismuth oxides undergo an order-disorder transition of the oxygen sublattice ∼600
°C. Annealing below this temperature leads to a decay in conductivity due to ordering. We recently discovered a high conductivity
Bi2O3 electrolyte doped with both Dy2O3 and WO3 (DyWSB). The dopants were selected based on their polarizability and its effect on both structural stability and conductivity.
Electrical conductivity results of the stabilized bismuth oxide system as function of temperature and time are presented.
By manipulating the composition ratio of the dopants, the structural stability was enhanced resulting in a more stable conductivity. |
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