Categorization of resistive switching of metal-Pr0.7Ca0.3MnO3-metal devices
作者： Z. L. Liao , Z. Z. Wang , Y. Meng , Z. Y. Liu , P. Gao
DOI: 10.1063/1.3159471
关键词:
摘要: Resistive switching (RS) characteristics of a Pr0.7Ca0.3MnO3 (PCMO) film sandwiched between Pt bottom electrode and top electrodes (TE) made various metals are found to belong two categories. Devices with TE Al, Ti, Ta exhibit large I-V hysteresis loop bipolar RS, but those Pt, Ag, Au, Cu do not. Transmission electron microscopy reveals that thin metal-oxide layer formed at the interface former group PCMO, not for latter TE. Analysis shows categorization depends on Gibbs free energy oxidation TEs respect PCMO.
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