Abstract
The Bi 2O 3CdOCdF 2 system was investigated by means of X-ray diffraction at temperatures between 630 and 800 °C. Four solid solution domains were characterized, corresponding respectively to anti-α-AgI, BiSrO rhombohedral (ϵ), ALa 2O 3 and fluorite structural types. Among these phases, the most attractive conductivity performances were evidenced in the fluorite domain ( σ = 2 × 10 −5 S cm −1 at 300°C for Bi 0.42Cd 0.58O 0.72F 0.97) and were shown to depend on the oxygen-fluorine ratio.
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