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Materials 2016, 9(7), 551; doi:10.3390/ma9070551

The Resistive Switching Characteristics in ZrO2 and Its Filamentary Conduction Behavior

1
Department of Electronic Engineering, National United University, Miaoli 36063, Taiwan
2
Department and Institute of Electronic Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 80778, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Teen-Hang Meen
Received: 29 May 2016 / Revised: 24 June 2016 / Accepted: 1 July 2016 / Published: 8 July 2016
(This article belongs to the Special Issue Selected Papers from ICASI 2016)
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Abstract

This study investigated the conduction properties of sputtered ZrO2 exhibiting reversible and stable resistance change. Similar current distributions in on/off conduction and set/reset switching were observed in top electrodes with a diameter of 150, 250, and 350 µm. The size independence of current magnitude implied the presence of an uneven filamentary path over the electrode area. Increased current compliance was imposed on the turn-on process, and the observed increase in on-state current and turn-off threshold was attributed to incremental filament diameter. Variations in current conduction and resistance switching were analyzed by monitoring sweeping bias limits in both positive and negative polarities. These experimental observations were interpreted based on the aspect ratio of channels comprising conductive and oxidized filament portions, thereby elucidating the characteristics of filamentary resistive switching. View Full-Text
Keywords: filament; resistance change; top electrode filament; resistance change; top electrode
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lai, C.-H.; Chen, H.-W.; Liu, C.-Y. The Resistive Switching Characteristics in ZrO2 and Its Filamentary Conduction Behavior. Materials 2016, 9, 551.

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