The bipolar resistive switching behavior in a device based on an crystalline iron-based organic-inorganic, perovskite-like material of (CH3NH3)2FeCl4 (MAFC), was examined and studied. Both high and low resistance states appeared to have no obvious degradation during a measurement period of 600 s with 400 cycles in a Ag/MAFC/Cu device, which also exhibited good thermal stability over a wide temperature range of 290 to 340 K. The conductivity-state switching behavior was derived from the competition between the ionic current within the MAFC and the Faradaic current that originated from oxidative reactions at the Ag/MAFC/Cu interface. A model explaining the oxidative reaction process was established to describe the symmetric resistive switching behavior in the Ag/MAFC/Cu cell. With an applied bias voltage sweeping, the oxidative layers passivated and dissipated at the Ag/MAFC/Cu interface that resulted in the competition between the induced current and the ionic current, and thus caused a symmetric resistance change. On the basis of this interfacial effect, the MAFC crystals can be used as memristor elements in devices for write-read-erase-rewrite process.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.6b04464 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Genome-wide analyses provide insights into genetic variation, phylo- and co-phylogenetic relationships, and biogeography of the entomopathogenic nematode genus Heterorhabditis.
Mol Phylogenet Evol
January 2025
Laboratory of Diagnosis and Integrated Management of Plant Bio-Aggressors. University of Parakou, BP123 Parakou, Borgou, Benin.
Multigene, genus-wide phylogenetic studies have uncovered the limited taxonomic resolution power of commonly used gene markers, particularly of rRNA genes, to discriminate closely related species of the nematode genus Heterorhabditis. In addition, conflicting tree topologies are often obtained using the different gene markers, which limits our understanding of the phylo- and co-phylogenetic relationships and biogeography of the entomopathogenic nematode genus Heterorhabditis. Here we carried out phylogenomic reconstructions using whole nuclear and mitochondrial genomes, and whole ribosomal operon sequences, as well as multiple phylogenetic reconstructions using various single nuclear and mitochondrial genes.
View Article and Find Full Text PDFThermocontrolled Radical Nucleophilicity vs Radicophilicity in Regiodivergent C-H Functionalization.
Org Lett
January 2025
School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, An OCC of Homi Bhabha National Institute, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India.
The temperature-dependent switching behavior of the saccharin radical is demonstrated, enabling the regiodivergent C-H and C-H functionalization of quinoxalin-2(1)-ones. The saccharin radical was generated through N-Br bond cleavage in -bromosaccharin (NBSA) and was observed to transition between radical and radicophile roles. At -10 °C, it was utilized as a radicophile, resulting in 100% C-amination, while at +35 °C, it acted as a radical, leading to exclusive C-bromination.
View Article and Find Full Text PDFImproving future agricultural sustainability by optimizing crop distributions in China.
PNAS Nexus
January 2025
Department of Geosciences and Natural Resource Management, University of Copenhagen, DK-1350 Copenhagen, Denmark.
Improving agricultural sustainability is a global challenge, particularly for China's high-input and low-efficiency cropping systems with environmental tradeoffs. Although national strategies have been implemented to achieve Sustainable Development Goals in agriculture, the potential contributions of crop switching as a promising solution under varying future climate change are still under-explored. Here, we optimize cropping patterns spatially with the targets of enhancing agriculture production, reducing environmental burdens, and achieving sustainable fertilization across different climate scenarios.
View Article and Find Full Text PDFUse of text messages to promote medication adherence and reduce blood pressure in patients with hypertension: the ESSENCE study.
Cad Saude Publica
January 2025
Programa de Pós-graduação em Assistência Farmacêutica - Associação de IES, Vitória da Conquista, Brasil.
The ESSENCE study evaluated the effect of sending text messages with and without reminders of the time of medication use on adherence to medication treatment and the reduction of blood pressure in patients with hypertension. This was a randomized, crossover, double-blind, active-controlled clinical trial, which included patients aged 30-69 years, followed up at a community pharmacy. Messages were automatically sent using a software and were received on the participants' smartphones.
View Article and Find Full Text PDFDoes familiarity-detection flip attention inward? The familiarity-flip-of-attention account of the primacy effect in memory for repetitions.
Mem Cognit
January 2025
Department of Neurology, University of California Davis, Sacramento, CA, 95816, USA.
In cognitive psychology, research on attention is shifting from focusing primarily on how people orient toward stimuli in the environment toward instead examining how people orient internally toward memory representations. With this new shift the question arises: What factors in the environment send attention inward? A recent proposal is that one factor is cue familiarity-detection (Cleary, Irving & Mills, Cognitive Science, 47, e13274, 2023). Within this theoretical framework, we reinterpret a decades-old empirical pattern-a primacy effect in memory for repetitions-in a novel way.
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!