Resistance switching in a single-crystalline NiO thin film grown on a Pt0.8Ir0.2 electrode

A single-crystalline NiO thin film was grown epitaxially on an atomically flat Pt0.8Ir0.2 bottom electrode layer grown epitaxially on a SrTiO3(100) substrate. The memory cells of the single-crystalline NiO thin film with Pt top electrodes showed unipolar resistance switching behaviors. The result demonstrates that a unipolar resistance switching is not a characteristic phenomenon in the polycrystalline NiO but it can also occur in the single-crystalline NiO. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3179169]