A5012355541- Transition Metal Oxide Nanomaterials
- Magnetic and transport properties of perovskites and related materials
- Gas Sensing Nanomaterials and Sensors
- Ga2O3 and related materials
- Multiferroics and related materials
- Mathematical and Theoretical Epidemiology and Ecology Models
- Advanced Photocatalysis Techniques
- Nonlinear Differential Equations Analysis
- Magnetic properties of thin films
- Ferroelectric and Piezoelectric Materials
- ZnO doping and properties
- Synthesis of heterocyclic compounds
- Advanced Memory and Neural Computing
- Advanced Condensed Matter Physics
- TiO2 Photocatalysis and Solar Cells
- Physics of Superconductivity and Magnetism
- Perovskite Materials and Applications
- Differential Equations and Numerical Methods
- Topic Modeling
- Natural Language Processing Techniques
- Manufacturing Process and Optimization
- Elasticity and Wave Propagation
- Advanced Graph Neural Networks
- Magneto-Optical Properties and Applications
- Synthesis and Reactivity of Sulfur-Containing Compounds
China Railway Shanghai Design Institute Group (China)
2025
Beihang University
2014-2024
Hefei Institute of Technology Innovation
2019-2024
University of Science and Technology of China
2014-2024
Education Department of Heilongjiang Province
2024
Anhui Provincial Hospital
2023
Anhui University
2022
National Synchrotron Radiation Laboratory
2014-2019
Beijing Advanced Sciences and Innovation Center
2019
Chinese Academy of Sciences
2019
Current-induced spin-orbit torques (SOTs) are of interest for fast and energy-efficient manipulation magnetic order in spintronic devices. To be deterministic, however, switching perpendicularly magnetized materials by SOT requires a mechanism in-plane symmetry breaking. Existing methods to do so involve the application an bias field, or incorporation structural asymmetry device, both which can difficult implement practical applications. Here, we report bias-field-free single perpendicular...
Abstract Mechanism of metal-insulator transition (MIT) in strained VO 2 thin films is very complicated and incompletely understood despite three scenarios with potential explanations including electronic correlation (Mott mechanism), structural transformation (Peierls theory) collaborative Mott-Peierls transition. Herein, we have decoupled coactions phase transitions across the MIT by implementing epitaxial strain on 13-nm-thick (001)-VO comparison to thicker films. The evolution during...
Abstract Instability of emerging perovskite organometallic halide in humidity environment is the biggest obstacle for its potential applications solar energy harvest and electroluminescent display. Understanding detailed decay mechanism these materials moisture a critical step towards final appropriate solutions. As model study presented this work, situ synchrotron radiation x-ray diffraction was combined with microscopy gravimetric analysis to degradation process CH 3 NH PbI results reveal...
Effective adsorption is of great importance to the photocatalytic degradation volatile organic compounds. Herein, we succeeded in preparation anatase TiO2 with clean dominant {001} and {101} facets. By using situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) equipped a homemade reaction system coupling gas-dosing system, found that facets exhibits higher toluene capacity than facets, which may be attributed different number unsaturated 5c-Ti capable forming main active...
A novel ternary sulfide photocatalyst of monoclinic CaIn2S4 with excellent photocatalytic H2 evolution activity is synthesized via a high-temperature sulfurization approach. The precursor orthorhombic CaIn2O4 can be converted in situ to by using H2S gas as the reagent once temperature exceeds 773 K. obtained yellow powders have mesoporous structure and chain-shape morphology large surface area high pore volume. SEM TEM observations indicate that specific nanostep structures are formed on...
Spin–orbit torque induced ferromagnetic magnetization switching brought by injecting a charge current into strong spin–orbit-coupling materials is an energy-efficient writing method in emerging magnetic memories and spin logic devices. However, because of the short coherence length layers, interfacial effective spin–orbit typically leads to high critical density for thick ferromagnet, which goes against low-power high-density requirements. Here, we experimentally demonstrate efficient bulk...
This study investigated mineral admixtures that are often utilized as replacements for cement in high-performance concrete with a view to enhancing their durability and workability. The properties of closely related the structure its pores. research employed low-field nuclear magnetic resonance technology explore influence water-to-cement ratio, curing time, admixture content on pore early-age pastes. findings indicated size distribution curves all composite pastes display distinct bimodal...
A controllable metal–insulator transition (MIT) of VO2 has been highly desired due to its huge potential applications in memory storage, smart windows or optical switching devices. Recently, interfacial strain engineering recognized as an effective approach tuning the MIT epitaxial films. However, strain-involved structural evolution during process is still not clear, which prevents comprehensively understanding and utilizing In this work, we have systematically studied thick films grown on...
The surface growth mode can induce the anomalous compressive strain in thicker VO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> epitaxial films, which can't be explained by conventional lattice-mismatch. Strain may an effective tool for manipulating MIT of VO<sub>2</sub> films.
Abstract Research on lithium compounds has attracted much attention nowadays. However, to elucidate the precise structure of is a challenge, especially when considering small ions that may be transferred between interstitial voids. Here, discovery reduced local symmetry (symmetry breaking) in domains Li 2 SrSiO 4 reported by employing Eu 3+ as spectroscopic probe, for which X‐ray, neutron, and electron diffraction have confirmed average long‐range with space group P 3 1 21. luminescence...
In this letter, a series of vanadium dioxide (VO2) epitaxial films were deliberately deposited on TiO2 substrates with different orientations [(001), (110), and (101)], in an attempt to gain insights into the strained VO2 film. We found in-plane [100] [1-10] directions, obviously anisotropic metal-insulator transition (MIT) (110)-oriented films. combination synchrotron radiation high-resolution x-ray diffraction characterizations, electronic transport data reveal that critical temperature...
Abstract To overcome the interfacial nature of spin‐orbit torque (SOT) in bilayers, novel bulk SOT (BSOT) is widely investigated to implement high‐density and low‐power spintronic devices. However, underlying mechanism efficient BSOT switching remains unclear, especially anomalously enhanced effective spin Hall angle (θ SH ) with increasing ferromagnet thickness (t FM ), due lacking simple high‐tunable material systems. Here, a series Pt/Co multilayers invariable gradient varying stacking...
Wafer-scale epitaxial and textured polymorphs of vanadium oxide thin films on low-cost sapphire substrates enable real applications.
Manganese oxide (MnO2) is a commonly used vulcanizing agent, which can convert polysulfide oligomers with reactive terminal mercaptans into polymeric networks. Herein, an elegant approach for the fast and facile curing behavior of rubbers was disclosed under visible-light irradiation. Photocatalytic disulfide bond coupling mercaptan end groups be achieved on MnO2 in presence More importantly, compared pristine MnO2, surface-reduced (R-MnO2) abundant Mn3+ sites oxygen vacancies exhibited...
Since Morin discovered that vanadium dioxide $(\mathrm{V}{\mathrm{O}}_{2})$ undergoes a reversible and dramatic structural phase transition coupled with an abrupt metal-insulator transition, extensive attention has been paid to $\mathrm{V}{\mathrm{O}}_{2}$ due its importance in fundamental condensed state physics potential technological applications. Here, we observed the precipitated phases of (insulating metallic polymorphs) could be controlled by relaxing dimerization vanadium-vanadium...
We studied using organic liquids (cyclohexane, n-butanol, and ethylene glycol) to modulate the transport properties at room temperature of an epitaxial VO2 film on a VO2/Al2O3 heterostructure. The resistance increased when coated with cyclohexane or maximum changes 31% 3.8%, respectively. In contrast, it decreased glycol, change −7.7%. all cases, recovered its original value after removing liquid. This organic-liquid-induced reversible switching suggests that films can be used as molecular sensors.
A “two-bird-with-one-stone” strategy by ozone modification on TiO<sub>2</sub>provides an approach to address the gaseous pollution with and VOCs.
High-frequency coherent acoustic phonons hold immense value in characterizing the coupling between magnetic, lattice, and electronic properties, offering nanometer-scale spatial resolution within ultrafast timescale. However, efficiently propagating intense sub-THz across diverse materials remains a formidable challenge. Here, we demonstrate that using vanadium dioxide (VO2) as transducer can induce enhanced pulses propagate (∼90%) into TiO2 due to excellent impedance matching minor lattice...
As a significant substitute for the traditional chlorination reagents such as POCl3, SOCl2, phosgene, trichloromethyl chloroformate (TCF, diphosgene), bis-(trichloromethyl) carbonate (BTC, triphosg...