Abstract
The ionic conductivity of solid solution Cd0.77Sr0.23F2 is 1.6 × 10−4 S/cm at 500 K. The conduction mechanism changes from a vacancy mechanism to an interstitial one at 523–553 K. In solid solutions Cd0.9R0.1F2.1 (R = La-Lu, Y), the activation enthalpy of conduction decreases from 0.9 to 0.8 eV with decreasing ionic radius of R3+, raising the 500-K conductivity from 6 ×10−6 S/cm for La3+to 6 × 10−5 S/cm for Lu3+. For crystalline Cd0.95In0.05F2.05, ionic and electronic conductivities at 313 K equal 5 × 10−4 and 5 − 10−6 S/cm.
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