Abstract
The oxygen diffusion in YBa2Cu3O7-δ was studied between 300 K and 1273 K in flowing oxygen by monitoring the 133Ba(EC)133 Cs nuclear quadrupole interaction by time differential perturbed angular correlation. The data are analyzed in a model of two different nearest neighbour oxygen configurations and yield hopping rates, the energy barrier and the difference in free enthalpy between both states. In addition, we studied the reduced system YBa2Cu3O6 +ε.
Received: 1991-8-9
Published Online: 2014-6-2
Published in Print: 1992-2-1
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