A5061010743- Multiferroics and related materials
- Ferroelectric and Piezoelectric Materials
- Electronic and Structural Properties of Oxides
- Acoustic Wave Resonator Technologies
- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Nonlocal and gradient elasticity in micro/nano structures
- Magnetic properties of thin films
- Advanced Memory and Neural Computing
- Perovskite Materials and Applications
- Ferroelectric and Negative Capacitance Devices
- Advanced Semiconductor Detectors and Materials
- Advanced Battery Materials and Technologies
- Smart Materials for Construction
- Glass properties and applications
- Hybrid Renewable Energy Systems
- Metamaterials and Metasurfaces Applications
- Magneto-Optical Properties and Applications
- Building materials and conservation
- Dielectric properties of ceramics
- Transition Metal Oxide Nanomaterials
- Planetary Science and Exploration
- 2D Materials and Applications
- Hydrogen Storage and Materials
- Quantum Dots Synthesis And Properties
Songshan Lake Materials Laboratory
2020-2025
Institute of Physics
2020-2023
Chinese Academy of Sciences
2018-2021
Lanzhou University of Technology
2020-2021
University of Science and Technology of China
2018-2021
Abstract Topological domain structures have drawn great attention as they potential applications in future electronic devices. As an important concept linking the quantum and classical magnetism, a magnetic Bloch point, predicted 1960s but not observed directly so far, is singular point around which magnetization vectors orient to nearly all directions. Here we show polar points tensile-strained ultrathin ferroelectric PbTiO 3 films, are alternatively visualized by phase-field simulations...
Strongly correlated oxides exhibit multiple degrees of freedoms, which can potentially mediate exotic phases with exciting physical properties, such as the polar vortex recently found in ferroelectric oxide films. A is stabilized by competition between charge, lattice, and/or orbital freedom, displays vortex–ferroelectric phase transitions and emergent chirality, making it a potential candidate for designing information storage processing devices. Here, combination controlled film growth...
Periodic arrays of electric dipole waves in ferroelectric oxides can be stabilized at room temperature by quenching.
Manipulating ferroic orders and realizing their coupling in multiferroics at room temperature are promising for designing future multifunctional devices. Single external stimulation has been extensively proved to demonstrate the ability of ferroelastic switching multiferroic oxides, which is crucial bridge ferroelectricity magnetism. However, it still challenging directly realize multi-field-driven magnetoelectric oxides as potential electrical Here, novel magneto-electric-optical BiFeO3...
Physical aging is a long-lasting research hot spot in the glass community, yet its long-term effects remain unclear because of limited experimental time. In this study, we discover extraordinary five typical lunar glassy particles with diameters ranging from about 20 to 53 micrometers selected Chang'e-5 regolith. It found that geological time scales' can lead unusually huge modulus enhancements larger than 73.5% while much weaker on hardness (i.e., varies decoupling evolutions Young's and...
Topological defects showing exotic properties and diverse functionalities provide us a potential utilization in nanoscale electronic devices. However, the formation mechanism density manipulation of topological such as center-type domains which are crucial for applications remain elusive. Usually, these generated by applying external electric fields ferroelectrics. In contrast, here we have prepared high-density center-divergent BiFeO3 self-assembled nanoislands deposited on both Nb-...
SrTiO3 is generally paraelectric with centrosymmetric structure exhibiting unique quantum fluctuation related ferroelectricity. Here we reveal highly polar and periodic polarization waves in at room temperature, which stabilized by tensile strains a sandwiched PbTiO3/SrTiO3/PbTiO3 structure. Scanning transmission electron microscopy reveals that a/c domain structures PbTiO3 layers exert the ultrathin layer consequently make states of SrTiO3. The as-received features peak ion displacement...
High-index ferroelectric films as (101)-orientated ones exhibit enhanced dielectric responses, piezoelectric and exotic switching behaviors, which are potential candidates for applications in memories capacitors. However, possible domain patterns wall structures (101)-oriented thin still elusive, results difficulties understanding the origin further modulating their special properties. In this work, a series of PbTiO3 (PTO) with 35, 50, 60, 70 nm thickness were grown on...
Controlling domain width, orientation, and patterns in oxide ferroelectrics are not only important for fundamental research but also potential electronic application. Here, a series of PbTiO3 thin films under various cooling rates were deposited on (110)-oriented NdScO3 substrates by pulsed laser deposition investigated using conventional transmission electron microscopy, Cs-corrected scanning TEM piezoresponse force microscopy. Contrast analysis diffraction revealed that a1/a2 large tensile...
Flexoelectricity is an effective tool in modulating the crystallographic structures and properties of oxides for multifunctional applications. However, engineering nonuniform strain to obtain tunable flexoelectric behaviors at atomic scale remains ongoing challenge conventional substrate-imposed ferroelectric films. Here, regulatable are demonstrated [110]-oriented BiFeO3 thin films, which triggered by strain-field coupling high-density interfacial dislocations. Using aberration-corrected...
Inducing clear ferroelectricity in the quantum paraelectric SrTiO3 is important for triggering methods to discover hidden phases condensed matter physics. Several such as isotope substitution and freestanding membranes could introduce toward nonvolatile memory applications. However, stable transformation from at room temperature still remains challenging. Here, we used multiple nano-engineering (SrTiO3)0.65/(CeO2)0.35 films achieve an emergent room-temperature ferroelectricity. It shown that...
The physical properties of perovskite oxides are very sensitive to oxygen vacancy structures, and an unambiguous acquaintance structures thin films is the precondition for applications many functional devices. Here, we report critical thickness control over ordering structure in epitaxial LaCoO3–x (LCO) characterized by atomic resolution scanning transmission electron microscopy (STEM). Lattice mappings extracted from Cs-corrected STEM images demonstrate that planes vertically distributed...
Topological lattices such as vortices are of importance in both scientific research and application potential. Here, we observed periodic vortex-antivortex pairs PbTiO3/SrTiO3 multilayered films deposited on orthorhombic (110)-oriented GdScO3 by pulsed laser deposition. Domain patterns the PbTiO3 layers containing topological structures were analyzed detail using advanced transmission electron microscopy. It was found that increasing thickness, a/c domains with extra c will form triangle a...