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Abstract
The DC current response of strontium bismuth tantalate (SBT) thin films was investigated as a function of applied voltage and temperature. The transient relaxation currents have been found to obey the universal Curie-von Schweidler law independent of the previous polarization. The steady-state current is independent of the initial polarization but depends on temperature. In the mid-voltage regime the conduction is thermally activated. At high applied voltages V the leakage current depends upon V4.