Abstract
A PAR thin film involved in a sandwich structure of Al/PAR/Al was prepared by vacuum evaporation. The electrical bistable switching phenomenon of the PAR thin film was studied under different circuit conditions. An intermediate state with nonlinear resistance was observed when the impedance of the film changed from high to low. Furthermore, an energy effect was found during the transition, i.e. when the applied voltage exceeded a certain value the energy consumption during the whole transition remained invariable. The results indicate that it is not the applied voltage or the current, but the energy that controls the switching process. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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