A5014545767- Ferroelectric and Piezoelectric Materials
- Photorefractive and Nonlinear Optics
- Acoustic Wave Resonator Technologies
- Luminescence Properties of Advanced Materials
- Microwave Dielectric Ceramics Synthesis
- Photonic and Optical Devices
- Solid State Laser Technologies
- Photonic Crystals and Applications
- Multiferroics and related materials
- Terahertz technology and applications
- Solid-state spectroscopy and crystallography
- Perovskite Materials and Applications
- Radiation Detection and Scintillator Technologies
- Glass properties and applications
- Gas Sensing Nanomaterials and Sensors
- Nuclear materials and radiation effects
- Ultrasonics and Acoustic Wave Propagation
- Nonlinear Optical Materials Studies
- Luminescence and Fluorescent Materials
- Phase-change materials and chalcogenides
- Advanced Fiber Laser Technologies
- Dielectric materials and actuators
- Electronic and Structural Properties of Oxides
Tsinghua University
2022-2025
State Key Laboratory of New Ceramics and Fine Processing
2022-2025
Nanjing University of Aeronautics and Astronautics
2015-2022
Nanjing Library
2019
Abstract Electric field-induced second harmonic generation allows electrically controlling nonlinear light-matter interactions crucial for emerging integrated photonics applications. Despite its wide presence in materials, the figures-of-merit of electric are yet to be elevated enable novel device functionalities. Here, we show that polar skyrmions, a topological phase spontaneously formed PbTiO 3 /SrTiO ferroelectric superlattices, exhibit high comprehensive performance. The second-order...
Transparent ferroelectric crystals with high piezoelectricity are challenging to build because of their complex structure and disordered domains in rhombohedral relaxor ferroelectrics. There eight along the <111> direction, which cause light scattering. In this study, perfect transparency is achieved [110] [001] directions [110]-poled 0.72Pb(Mg1/3 Nb2/3 )O3 -0.28PbTiO3 (PMN-PT) crystals, have a d31 value 1700 pC N-1 electro-optic coefficient γ33 320 pm V-1 . This implies that [110]-oriented...
Abstract BaTiO 3 thin films emerge as a highly promising material platform for integrated photonics due to their outstanding electro‐optic properties and diverse functionalities. Despite extensive studies, there remains notable gap in the understanding of intricate relationship between phase structure, domain switching kinetics performance these materials. By controlling structural evolution, it is possible gain deep insights into physical mechanisms underlying performance. Here,...
PbZrO3 (PZO) thin films, as a classic antiferroelectric material, have attracted tremendous attention for their excellent dielectric, electromechanical, and thermal switching performances. However, several fundamental questions remain unresolved, particularly the existence of an intermediate phase during transition from (AFE) to ferroelectric (FE) state. Here, coexistence configuration orthorhombic AFE tetragonal-like (T-like) is reported in epitaxial PZO with thickness ranging 16 110 nm....
Abstract Optical dispersion properties are indispensable in the thorough design of modern perovskite‐based photonics devices. Based on inverse temperature crystallization (ITC) method, here, CH 3 NH PbX (CH ═MA, X═Cl, Br, I) bulk single crystals grown from precursor solution. X‐ray patterns indicate that perovskite have good crystallinity. MAPbCl , MAPbBr and MAPbI transparent above 427, 574, 823 nm, respectively. Refractive indices MAPbX measured with different wavelength at 24 °C reduced...
Abstract During the last two decades, PT‐based relaxor ferroelectric crystals such as (1− x )Pb(Zn 1/3 Nb 2/3 )O 3 – PbTiO (PZN–PT), )Pb(Mg (PMN–PT), and − y )Pb(In 1/2 Pb(Mg (PIN–PMN–PT or PIMNT) crystals, are widely studied due to their huge piezoelectric properties super‐high electro‐mechanical coupling factors. They have excellent with compositions around morphotropic phase boundary (MPB). It is gratifying that replacing traditional PZT piezo‐ceramics in many application fields. Most...
Giant tunability of UC PL by oxygen vacancy control was realized in Er-KNN single crystals grown for the first time.
Chromium-doped CaMgSi 2 O 6 ([Formula: see text]: CMS) fluorescent ceramics with various concentrations were fabricated using solid-state reaction technique. All the samples sintered at 1250[Formula: text]C for 3 h. Analysis of microstructure Cr[Formula: CMS shows homogeneous structure grain size distributions between 0.86 nm and 2.26 nm. Luminescent spectra show two emission peaks, a strong peak 872 weak 960 because [Formula: text] transition ions. Intensity peaks increases concentration,...
Lead-free piezoelectric ceramic materials have received extensive attention due to their potential application in new optoelectronic devices. The outstanding advantages of lead-free are nontoxicity and environmental-friendliness. Photoluminescence is one the important properties ceramics. This property widely used printing, testing materials, medical other technologies. At same time, with up-conversion luminescence can also be detect infrared light. Here, we had made [Formula: see text]...
The representatives of relaxor ferroelectric (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 (PZNT) and (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMNT) have been extensively studied due to their excellent dielectric piezoelectric properties near the morphotropic phase boundary (MPB). However, low rhombohedral tetragonal transition temperature Curie directly affect performance stability devices, particularly for high-power ultrasonic transducers. In this paper, large size 0.62Pb(In1/2Nb1/2)O3-0.38PbTiO3 (PINT) crystal...
Abstract Relaxor ferroelectric single crystal Pb(In 1/2 Nb )O 3 –Pb(Mg 1/3 2/3 –PbTiO (PIN–PMN–PT) has received extensive research and attention due to its excellent piezoelectric, electromechanical, other properties. In particular, tetragonal relaxor crystals have shown greater application potential in high‐temperature devices their higher Curie temperature better stability. However, the low piezoelectric performance of also greatly limits application, on optical properties is not...
Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI
Nanoscale spatially controlled modulation of the properties ferroelectrics via artificial domain pattering is crucial to their emerging optoelectronics applications. New patterning strategies achieve high precision and efficiency link resultant structures with device functionalities are being sought. Here, we present an epitaxial heterostructure SrRuO3/PbTiO3/SrRuO3, wherein configuration delicately determined by charge screening conditions in SrRuO3 layer substrate strains. Chemical etching...
Gallium-tellurite glass is a new optical material with good transmittance in the infrared region up to 6.5[Formula: see text][Formula: text]. Three different tellurate glasses were prepared: TeO 2 –ZnO–Ga O 3 (TZG), –ZnO–La (TZL) and –ZnO–B (TZB). X-ray diffraction indicates that no crystal precipitates three systems, which maintain stable state. Raman scattering experiments fluorescence emission spectroscopy measurements carried out on tellulate doped same concentration of Tm[Formula: It...
Abstract Electric field-induced second harmonic generation (EFISH) allows electrically controlling nonlinear light-matter interactions crucial for emerging integrated photonics applications. Despite its wide presence in materials, the figures-of-merit of EFISH are yet to be elevated enable novel device functionalities. Here, we show that polar skyrmions, a topological phase spontaneously formed PbTiO 3 /SrTiO ferroelectric superlattices, exhibit an outstanding comprehensive performance. The...