A5059966398- Ferroelectric and Piezoelectric Materials
- Multiferroics and related materials
- Magnetic and transport properties of perovskites and related materials
- Dielectric properties of ceramics
- Electronic and Structural Properties of Oxides
- Microwave Dielectric Ceramics Synthesis
- Advancements in Battery Materials
- Dielectric materials and actuators
- Acoustic Wave Resonator Technologies
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advanced Condensed Matter Physics
- Shape Memory Alloy Transformations
- Impact of AI and Big Data on Business and Society
- Transition Metal Oxide Nanomaterials
- Ferroelectric and Negative Capacitance Devices
- Advancements in Solid Oxide Fuel Cells
- Advanced Battery Technologies Research
- Coal Properties and Utilization
- Ga2O3 and related materials
- Geoscience and Mining Technology
- Pharmaceutical and Antibiotic Environmental Impacts
- Cytomegalovirus and herpesvirus research
- Optical properties and cooling technologies in crystalline materials
- Advanced Thermoelectric Materials and Devices
University of Science and Technology Beijing
2021-2025
Anhui Polytechnic University
2024
Sun Yat-sen University
2024
Space Engineering University
2024
Chemical design of lead-free relaxors with simultaneously high energy density (Wrec) and efficiency (η) for capacitive energy-storage has been a big challenge advanced electronic systems. The current situation indicates that realizing such superior properties requires highly complex chemical components. Herein, we demonstrate that, via local structure design, an ultrahigh Wrec 10.1 J/cm3, concurrent η 90%, as well excellent thermal frequency stabilities can be achieved in relaxor very simple...
Ferromagnetic insulators are receiving ever-increasing research activities driven not only by the unique advantage of low power loss during spin-wave-based information processing but also potential to construct next-generation spintronic devices. However, either exceedingly rare candidates or Curie temperature far below room greatly hinder their practical application. Here, through modulation a novel three-dimensional (3D) tensile strain, room-temperature ferromagnetic insulating state with...
Layered manganese‐rich oxides (LMROs) are widely recognized as the leading cathode candidates for grid‐scale sodium‐ion batteries (SIBs) owing to their high specific capacities and cost benefits, but notorious Jahn‐Teller (J‐T) distortion of Mn3+ always induces severe structural degradation consequent rapid failure, impeding practical implementation such materials. Herein, we unveil "intrinsic against J‐T distortion" mechanism effectively stabilize layered frameworks LMRO cathodes. The...
Abstract Layered oxide cathodes for sodium‐ion batteries (SIBs) have drawn increasing attention owing to their fascinating additional capacity contributed by oxygen‐redox chemistry. Unfortunately, excessive oxygen redox incurs an irreversible release, deteriorating the cyclic stability and compromising advantage of capacity. Significant efforts been made so far stabilize lattice oxygen, but potential advantages associated with loss ignored. Herein, a complementary Mn O mechanism is first...
Dielectric ceramic capacitors with high recoverable energy density (
Dielectric capacitors are highly desired in modern electronic devices and power systems to store recycle electric energy. However, achieving simultaneous high energy density efficiency remains a challenge. Here, guided by theoretical phase-field simulations, we able achieve superior comprehensive property of ultrahigh 90-94% 85-90 J cm
Relaxor ferroelectrics are highly desired for pulse-power dielectric capacitors, however it has become a bottleneck that substantial enhancements of energy density generally sacrifice efficiency under superhigh fields. Here, we demonstrate novel concept polarizable concentrated dipole glass in delicately-designed high-entropy (Bi
Abstract Magnetic refrigeration technology can achieve higher energy efficiency based on the magnetocaloric effect (MCE). However, practical application of MCE materials is hindered by their poor mechanical properties, making them challenging to process into devices. Conventional strengthening strategies usually lead a trade‐off with capacity reduction. Here, novel design presented overcome this dilemma forming dual‐phase alloys through in situ precipitation tough magnetic phase within an...
Abstract Dielectric ceramics have attracted significant attention in power electronic systems, owing to their exceptional charging and discharging speeds, as well high density. However, simultaneously achieving a recoverable energy density ( W rec ) efficiency η high‐voltage dielectric remains challenge for applications where breakdown electric field E b is required. In this study, high‐quality (1 – x )NaNbO 3 Sr 0.7 Bi 0.2 (Mg 1/3 Nb 2/3 )O [(1 )NN –x SBMN] were prepared based on an...
Abstract Although the discovery of exceptional ferroelectricity in paraelectrics offers great opportunities to enrich diversity ferroelectric family and promote development novel functionalities, transformation paraelectric phases into remains challenging. Herein, a method is presented for driving states via introduction M/O‐deficient (M metal) perovskite nanoregions. Using this method, strong ferroelectricity, equivalent that classic ferroelectrics, achieved prototype strontium titanate...
Lattice distortion and disorder in the chemical environment of magnetic atoms within high-entropy compounds present intriguing issues modulation functional compounds. However, complexity inherent disordered systems has resulted a relative scarcity comprehensive investigations exploring mechanisms these alloys. Herein, we investigate magnetocaloric effect (MCE) intermetallic compound Gd0.2Tb0.2Dy0.2Ho0.2Er0.2Co2. Notably, operating temperature range MCE broadens by an order magnitude from 9...
Abstract Dielectric energy storage capacitors are indispensable components in advanced electronic and electrical systems. Excellent performance requires the dielectric materials possessing low residual polarization ( P r ), high breakdown strength E b large maximum m ). The first two parameters can be typically achieved through chemical regulation, while max is closely related to matrix. Theoretical calculations demonstrate that a strong coupling of A ‐O bonds lattice enhance polarization,...
Abstract Dielectric energy storage capacitors are indispensable components in advanced electronic and electrical systems. Excellent performance requires the dielectric materials possessing low residual polarization ( P r ), high breakdown strength E b large maximum m ). The first two parameters can be typically achieved through chemical regulation, while max is closely related to matrix. Theoretical calculations demonstrate that a strong coupling of A ‐O bonds lattice enhance polarization,...
Layered manganese‐rich oxides (LMROs) are widely recognized as the leading cathode candidates for grid‐scale sodium‐ion batteries (SIBs) owing to their high specific capacities and cost benefits, but notorious Jahn‐Teller (J‐T) distortion of Mn3+ always induces severe structural degradation consequent rapid failure, impeding practical implementation such materials. Herein, we unveil "intrinsic against J‐T distortion" mechanism effectively stabilize layered frameworks LMRO cathodes. The...
Owing to their wide application in oxide-based electrochemical and energy devices, ion conductors have attracted considerable attention. However, the ionic conductivity of developed systems is still too low satisfy low-temperature application. In this study, by developing emergent interphase strain engineering method, we achieve a colossal SrZrO3-xMgO nanocomposite films, which over one order magnitude higher than that currently widely used yttria-stabilized zirconia below 673 K....
Incipient ferroelectrics have emerged as an attractive class of functional materials owing to their potential be engineered for exotic ferroelectric behavior, holding great promise expanding the family. However, thus far, artificially ferroelectricity has fallen far short rivaling classic ferroelectrics. In this study, we address challenge by developing a superfine nanodomain engineering strategy. By applying approach representative incipient SrTiO
A method of manipulating local symmetry to achieve a strong magnetic/electric moment along with high transition temperatures is proposed and experimentally demonstrated for the prototypical perovskite SrTiO${}_{3}$.
Regulating the magnetic properties of multiferroics lays foundation for their prospective application in spintronic devices. Single-phase multiferroics, such as rare-earth ferrites, are promising candidates; however, they typically exhibit weak magnetism at room temperature (RT). Here, we significantly boosted RT ferromagnetism a representative ferrite, EuFeO3, by oxygen defect engineering. Polarized neutron reflectometry and magnetometry measurements reveal that saturation magnetization...
With the increasing demand for mineral resources, mining operations are gradually moving into deeper levels, leading to a rise in severity of high-temperature thermal hazard caused by geothermal heat mines. To understand distribution and characteristics temperature field surrounding rock metal mines, this study derived non-steady-state conduction differential equation suitable underground mines based on property changes rocks at high temperatures, thereby obtaining insulation ring rock....
Abstract Dielectric capacitors harvest energy through an electrostatic storage process, which enables ultrafast charging‐discharging rate and ultrahigh power density. However, achieving high density ( W rec ) efficiency η simultaneously, especially when preserving them across a wide frequency/temperature range or cycling numbers, remains challenging. In this work, by introducing NaTaO 3 into the representative ferroelectric relaxor of Bi 0.5 K TiO ‐Bi Na leveraging mismatch between B‐site...
The insight into the three-dimensional configuration of ferroelectric ordering in nanomaterials is motivated by application development functional nanodevices and structural designing. However, atomic deciphering spatial distribution ordered structure remains challenging for limitation dimension probing techniques. In this paper, a neutron pair function (nPDF) was utilized to analyze spontaneous polarization zero-dimensional PbTiO3 nanoparticles three dimensions, via reverse Monte Carlo...