Abstract
This letter reports on the development and characterization of ferrite based resistive switching devices that join the excellent multifunctional memory properties of ferrites and silicon processing technologies. The core of the resistive switching devices consists of a single transition metal ferrite (Co, Cu, Ni, and Zn) confirmed through energy dispersive x-ray spectroscopy and x-ray diffraction. The ferrites are spin coated onto processed silicon dies (acting as bottom electrode/substrate) and deposited with a silver top electrode. Both electrodes are active, providing additional charge carriers to the main redox reaction mechanism (found in ferrites), thus helping device stability. Characterization and analysis of the ferrite-silicon devices show low resistive state ohmic conduction as well as the non-linear conducting mechanisms (Schottky Emission and Poole Frenkel) found in previously reported ferrite resistive switching devices. An additional reaction mechanism (space charge limited current) was found that is attributed to the active electrodes through the influx of excess charge carriers.
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