A5025127998- Multiferroics and related materials
- Ferroelectric and Piezoelectric Materials
- Magnetic and transport properties of perovskites and related materials
- Perovskite Materials and Applications
- Advanced Condensed Matter Physics
- Advanced Memory and Neural Computing
- Conducting polymers and applications
- Electronic and Structural Properties of Oxides
- Theoretical and Computational Physics
- 2D Materials and Applications
- Magnetic properties of thin films
- Ferroelectric and Negative Capacitance Devices
- Advanced Photocatalysis Techniques
- Semiconductor materials and devices
- Acoustic Wave Resonator Technologies
- Quantum Dots Synthesis And Properties
- Advanced Sensor and Energy Harvesting Materials
- Physics of Superconductivity and Magnetism
- Holomorphic and Operator Theory
- Dielectric properties of ceramics
- Chalcogenide Semiconductor Thin Films
- ZnO doping and properties
- Dielectric materials and actuators
- Transition Metal Oxide Nanomaterials
- Gas Sensing Nanomaterials and Sensors
Collaborative Innovation Center of Advanced Microstructures
2016-2025
Nanjing University
2016-2025
South China Normal University
2016-2025
China Agricultural University
2007-2025
Jingdezhen Ceramic Institute
2019-2024
Ministry of Agriculture and Rural Affairs
2019-2024
Chinese Academy of Agricultural Sciences
2020-2024
Hubei Normal University
2016-2024
Chinese Academy of Sciences
2008-2024
Hangzhou Dianzi University
2024
The dimensionless thermoelectric figure of merit (ZT) in bismuth antimony telluride (BiSbTe) bulk alloys has remained around 1 for more than 50 years. We show that a peak ZT 1.4 at 100 degrees C can be achieved p-type nanocrystalline BiSbTe alloy. These materials were made by hot pressing nanopowders ball-milled from crystalline ingots under inert conditions. Electrical transport measurements, coupled with microstructure studies and modeling, the improvement is result low thermal...
Single-phased ferroelectromagnet BiFeO3 ceramics with high resistivity were synthesized by a rapid liquid phase sintering technique. Saturated ferroelectric hysteresis loops observed at room temperature in the sintered 880 °C for 450 s. The spontaneous polarization, remnant and coercive field are 8.9 μC/cm2, 4.0 39 kV/cm, respectively, under an applied of 100 kV/cm. It is proposed that formation Fe2+ oxygen deficiency leading to higher leakage can be greatly suppressed very heating rate,...
Molecular piezoelectrics are highly desirable for their easy and environment-friendly processing, light weight, low processing temperature, mechanical flexibility. However, although 136 years have passed since the discovery in 1880 of piezoelectric effect, molecular with a coefficient d33 comparable piezoceramics such as barium titanate (BTO; ~190 picocoulombs per newton) not been found. We show that trimethylchloromethyl ammonium trichloromanganese(II), an organic-inorganic perovskite...
Abstract Photodetectors are critical parts of an optical communication system for achieving efficient photoelectronic conversion signals, and the response speed directly determines bandwidth whole system. Metal halide perovskites, emerging class low‐cost solution‐processed semiconductors, exhibiting strong absorption, low trap states, high carrier mobility, widely investigated in photodetection applications. Herein, through optimizing device engineering film quality, high‐performance...
Multiferroics are those materials with more than one ferroic order, and magnetoelectricity refers to the mutual coupling between magnetism (spins and/or magnetic field) electricity (electric dipoles electric field). In spite of long research history in whole twentieth century, discipline multiferroicity has never been so highly active as that first decade twenty-first it become hottest disciplines condensed matter physics science. A series milestones steady progress past have enabled our...
Abstract Recently, Ruddlesden–Popper perovskites (RPPs) have attracted increasing interests due to their promising stability. However, the efficiency of solar cells based on RPPs is much lower than that 3D perovskites, mainly attributed poor charge transport. Herein, a simple yet universal method for controlling quality RPP films by synergistic effect two additives in precursor solution presented. achieved this show (a) high with uniform morphology, enhanced crystallinity, and reduced...
Developing environmentally friendly perovskites has become important in solving the toxicity issue of lead-based perovskite solar cells. Here, first double (Cs2 AgBiBr6 ) cells using planar structure are demonstrated. The prepared Cs2 films composed high-crystal-quality grains with diameters equal to film thickness, thus minimizing grain boundary length and carrier recombination. These high-quality show long electron-hole diffusion lengths greater than 100 nm, enabling fabrication resulting...
Electrical manipulation of skyrmions attracts considerable attention for its rich physics and promising applications. To date, such a is realized mainly via spin-polarized current based on spin-transfer torque or spin-orbital effect. However, this scheme energy-consuming may produce massive Joule heating. reduce energy dissipation risk heightened temperatures skyrmion-based devices, an effective solution to use electric field instead as stimulus. Here, we realize electric-field in...
Multiferroics, where multiple ferroic orders coexist and are intimately coupled, promise novel applications in conceptually new devices on one hand, the other hand provide fascinating physics that is distinctly different from of high-TC superconductors colossal magnetoresistance manganites. In this mini-review, we highlight recent progress single-phase multiferroics exploration materials, efficient roadmaps for functionality enhancement, phenomena beyond magnetoelectric coupling, underlying...
Solution-processed metal halide perovskites (MHPs) have demonstrated great advances on achieving high-performance photodetectors. However, the intrinsic material instability and toxicity of lead still hinder practical applications MHPs-based In this work, first highly sensitive fast-response lead-free perovskite photodetectors based Cs2AgBiBr6 double films are demonstrated. A convenient solution method is developed to deposit high-quality film with large grain sizes, low trap densities, long...
Abstract Nowadays the development of machine vision is oriented toward real-time applications such as autonomous driving. This demands a hardware solution with low latency, high energy efficiency, and good reliability. Here, we demonstrate robust self-powered in-sensor computing paradigm ferroelectric photosensor network (FE-PS-NET). The FE-PS-NET, constituted by photosensors (FE-PSs) tunable photoresponsivities, capable simultaneously capturing processing images. In each FE-PS, photovoltaic...
Reservoir computing (RC) offers efficient temporal information processing with low training cost. All-ferroelectric implementation of RC is appealing because it can fully exploit the merits ferroelectric memristors (e.g., good controllability); however, this has been undemonstrated due to challenge developing distinctly different switching characteristics specific reservoir and readout network. Here, we experimentally demonstrate an all-ferroelectric system whose network are implemented...
Chiral magnetic skyrmions are topological swirling spin textures that hold promise for future information technology. The electrical nucleation and motion of have been experimentally demonstrated in the last decade, while detection compatible with semiconductor processes has not achieved, this is considered one most crucial gaps regarding use real applications. Here, we report direct observation nanoscale CoFeB/MgO-based tunnel junction devices at room temperature. High-resolution force...
Abstract Realizing room-temperature magnetic skyrmions in two-dimensional van der Waals ferromagnets offers unparalleled prospects for future spintronic applications. However, due to the intrinsic spin fluctuations that suppress atomic long-range order and inherent inversion crystal symmetry excludes presence of Dzyaloshinskii-Moriya interaction, achieving 2D magnets remains a formidable challenge. In this study, we target magnet Fe 3 GaTe 2 unveil introduction iron-deficient into compound...
In-sensor computing has emerged as an ultrafast and low-power technique for next-generation machine vision. However, in situ training of in-sensor systems remains challenging due to the demands both high-performance devices efficient programming schemes. Here, we experimentally demonstrate artificial neural network (ANN) based on ferroelectric photosensors (FE-PSs). Our FE-PS exhibits self-powered, fast (<30 μs), multilevel (>4 bits) photoresponses, well long retention (50 days), high...
The exotic topological domains in ferroelectrics and multiferroics have attracted extensive interest recent years due to their novel functionalities potential applications nanoelectronic devices. One of the key challenges for such is a realization robust yet reversibly switchable nanoscale domain states with high density, wherein spontaneous structures can be individually addressed controlled. This has been accomplished our work using density arrays epitaxial BiFeO3 (BFO) nanodots lateral...
Background and AimsMany notorious alien invasive plants are clonal, but little is known about some roles aspects of clonal integration. Here, the hypothesis tested that integration affects growth, photosynthetic efficiency, biomass allocation competitive ability exotic weed Alternanthera philoxeroides (Amaranthaceae).
We report on comprehensive results identifying the ground state of a triangular-lattice structured YbZnGaO$_4$ to be spin glass, including no long-range magnetic order, prominent broad excitation continua, and absence thermal conductivity. More crucially, from ultralow-temperature a.c. susceptibility measurements, we unambiguously observe frequency-dependent peaks around 0.1 K, indicating spin-glass state. suggest this conclusion hold also for its sister compound YbMgGaO$_4$, which is...
Abstract Perovskite oxides such as PbZr x Ti 1− O 3 (PZT) and BaTiO show excellent dielectric, piezoelectric, pyroelectric, ferroelectric properties simultaneously have been widely used in capacitor, sensor, actuator, motor, surface acoustic wave devices, energy storage applications. Recently, a variety of solution‐processed halide perovskite materials discovered to exhibit fascinating high charge mobility, strong light absorption, even ferroelectricity. In this review, the recent progress...
Many multiferroic materials, with various chemical compositions and crystal structures, have been discovered in the past years. Among these multiferroics, some perovskite manganites ferroelectricity driven by magnetic orders are of particular interest. In manganites, not only their properties quite prominent, but also involved physical mechanisms very plenty representative. this Brief Review, we will introduce recent theoretical experimental progress on manganites.
An effective carrier concentration <italic>n</italic><sub>eff</sub> is proposed to evaluate the bipolar effect, and results show good consistency with measured data.
In this work, planar inorganic perovskite solar cells (PSCs) with the simple structure of glass/ITO/SnO<sub>2</sub>/CsPbI<sub>2</sub>Br/C have been fabricated.