We investigated the bipolar resistive switching (BRS) properties of Mn-doped NiO thin films by sol-gel spin-coating. As the Mn doping concentration increased, lattice constant, grain size and band gap were found to decrease simultaneously. Moreover, the electroforming voltages and threshold voltages were gradually reduced. It can be ascribed to the increase in the density of grain boundaries, and the defects caused by doping Mn and lower formation energy of Mn-O. They would be helpful for the formation of oxygen vacancies and conductive filaments. It is worth mentioning that excellent BRS behaviors can be obtained at a low Mn-doped concentration including enlarged ON/OFF ratio, good uniformity and stability. Compared with other samples, the 1% Mn-doped NiO showed the highest ON/OFF ratio (>10), stable endurance of >100 cycles and a retention time of >10 s. The mechanism should be determined by bulk properties rather than the dual-oxygen reservoir structure. These results indicate that appropriate Mn doping can be applied to improve the BRS characteristics of NiO thin films, and provide stable, low-power-consumption memory devices.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9085278 | PMC |
| http://dx.doi.org/10.1039/c8ra04784g | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Improving the Thermal Stability of Indium Oxide n-Type Field-Effect Transistors by Enhancing Crystallinity through Ultrahigh-Temperature Rapid Thermal Annealing.
ACS Appl Mater Interfaces
January 2025
Institute of Electronics, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan.
Ultrathin indium oxide films show great potential as channel materials of complementary metal oxide semiconductor back-end-of-line transistors due to their high carrier mobility, smooth surface, and low leakage current. However, it has severe thermal stability problems (unstable and negative threshold voltage shifts at high temperatures). In this paper, we clarified how the improved crystallinity of indium oxide by using ultrahigh-temperature rapid thermal O annealing could reduce donor-like defects and suppress thermal-induced defects, drastically enhancing thermal stability.
View Article and Find Full Text PDFComputer modelling and vegetable bench test of a bipolar electrode array intended for use in high frequency irreversible electroporation treatment of skin cancer.
Biomed Eng Lett
January 2025
Power Electronics Research Centre, School of Engineering, University of Galway, Galway, Ireland.
Purpose: Pulsed electrical field (PEF) ablation is an energy-based technique used to treat a range of cancers by irreversible electroporation (IRE). Our objective was to use computational and plant-based models to characterize the electric field distribution and ablation zones induced with a commercial 8-needle array-based applicator intended for treatment of skin cancer when high-frequency IRE (H-FIRE) pulses are applied. Electric field characterisation of this device was not previously assessed.
View Article and Find Full Text PDFChondroitin Sulfate and Proteinoids in Neuron Models.
ACS Appl Bio Mater
January 2025
Unconventional Computing Laboratory, University of the West of England, Bristol BS16 1QY, U.K.
This study examines the relationship between chondroitin sulfate, proteinoids, and computational neuron models, with a specific emphasis on the Izhikevich neuron model. We investigate the effect of chondroitin sulfate-proteinoid complexes on the behavior and dynamics of simulated neurons. Through the use of computational simulations, we provide evidence that these biomolecular components have the power to regulate the responsiveness of neurons, the patterns of their firing, and the ability of their synapses to change within the Izhikevich architecture.
View Article and Find Full Text PDFConductive Hydrogel Systems Enabling Rapid and Controllable Release of Guests at Low-Voltage Region.
Small
January 2025
School of Materials and Chemistry & Institute of Bismuth and Rhenium, University of Shanghai for Science and Technology, Shanghai, 200093, China.
Smart delivery materials that respond to electric fields attract interest across various fields, whereas systems enabling rapid, controllable, and safe delivery capabilities remain essential. Based on the hypothesis of utilizing electric field to manipulate inter-component noncovalent bonds in delivery materials, a hydrogel system is hereby reported that is capable of achieving rapid guest release at low-voltage region. This system harnesses the synergistic regulation of electric field-induced host-guest electrostatic repulsion, alongside the dynamic modulation of H-bond interactions within the conductive hydrogel.
View Article and Find Full Text PDFSex-specific differences in mortality and neurocardiac interactions in the Kv1.1 knockout mouse model of sudden unexpected death in epilepsy (SUDEP).
J Physiol
January 2025
Department of Biological Sciences, Southern Methodist University, Dallas, TX, USA.
Sudden unexpected death in epilepsy (SUDEP) is a devastating complication of epilepsy with possible sex-specific risk factors, although the exact relationship between sex and SUDEP remains unclear. To investigate this, we studied Kcna1 knockout (Kcna1) mice, which lack voltage-gated Kv1.1 channel subunits and are widely used as a SUDEP model that mirrors key features in humans.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!