A5012829468- Ferroelectric and Piezoelectric Materials
- Microwave Dielectric Ceramics Synthesis
- Multiferroics and related materials
- Dielectric properties of ceramics
- Dielectric materials and actuators
- Acoustic Wave Resonator Technologies
- Cultural Heritage Materials Analysis
- Advanced Thermoelectric Materials and Devices
- Building materials and conservation
- Chalcogenide Semiconductor Thin Films
- Conservation Techniques and Studies
- Advanced Cellulose Research Studies
- Magnetic and transport properties of perovskites and related materials
- Electronic and Structural Properties of Oxides
- Thermal properties of materials
- Advanced ceramic materials synthesis
- Thermal Radiation and Cooling Technologies
- Advancements in Solid Oxide Fuel Cells
- Thermal Expansion and Ionic Conductivity
- Perovskite Materials and Applications
- Corrosion Behavior and Inhibition
- Physics of Superconductivity and Magnetism
- Advanced Sensor and Energy Harvesting Materials
- Dyeing and Modifying Textile Fibers
- Quantum Dots Synthesis And Properties
Shaanxi Normal University
2016-2025
Institute of Macromolecular Chemistry
2017
State Council of the People's Republic of China
2016
China XD Group (China)
2016
Pennsylvania State University
2015
Brunel University of London
2013
Large energy storage density and high efficiency in Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>-based relaxor ferroelectric ceramic induced by AgNbO<sub>3</sub> doping.
Eco-friendly transparent dielectric ceramics with superior energy storage properties are highly desirable in various energy-storage electronic devices, ranging from advanced pulse capacitors to electro-optical multifunctional devices. However, the collaborative improvement of and optical transparency KNN-based still remains challenging. To address this issue, multiple synergistic strategies proposed, such as refining grain size, introducing polar nanoregions, inducing a high-symmetry phase...
Abstract Dielectric capacitors with ultrahigh power density have emerged as promising candidates for essential energy storage components in electronic and electrical systems. They enable enhanced integration, miniaturization, lightweight design. However, the development of dielectric materials cutting-edge applications has been significantly limited by their low recoverable ( W rec ) efficiency η ), especially at moderate electric fields. In this study, we fabricated 0.85K 0.5 Na NbO 3...
The phase transition behavior and piezoelectric properties of ( Ba 1− x Ca )( Zr 0.1 Ti 0.9 ) O 3 0.85 0.15 y ceramics were investigated in this work to find out the potential factors contributing large piezoelectricity. It was found that morphotropic boundary MPB closely related presence an intermediate (considered as orthorhombic work) between rhombohedral R tetragonal T phases at a narrow region, which could be carefully adjusted by temperature contents composition. In addition, maximum...
Abstract Highly transparent lead‐free (1‐ x )K 0.5 Na NbO 3 – Sr(Zn 1/3 Nb 2/3 )O (KNN– SZN) ferroelectric ceramics have been synthesized via a conventional pressureless sintering method. All samples are optically clear, showing high transmittance in the visible and near‐infrared regions (~70% ~80% at mm of thickness, respectively). This exceptionally good is due to pseudo‐cubic phase structure as well dense fine‐grained microstructure. In addition, energy storage density 3.0 J/cm has...
Y 2/3 Cu 3 Ti 4 O 12 ceramics were successfully prepared by the conventional solid‐state reaction method. Effects of sintering conditions on microstructure, phase structure, and dielectric properties investigated in detail. sintered at 1010°C for 25 h exhibited a giant constant (1.10 × 10 ) relatively low loss (0.033) around room temperature. The samples showed good temperature stability ( – 9.5%) range from −60°C to 125°C kHz. It was also found that new relaxation III appeared higher...
Lead-free (Ba1−xCax)(Zr0.1Ti0.9)O3(BCZT) ceramics were synthesized by conventional solid-state sintering process. The Ca ion substitutions on phase transition behavior, microstructure, ferroelectric and piezoelectric properties of BCZT systemically investigated. diffuse (DPT) behavior was suppressed, while the orthorhombic → tetragonal (O→T) rhombohedral (R→O) transitions observed when content is at x = 0.05. Further increasing content, DPT gradually enhanced, both O→T R→O evolved into R→T...
Designing dielectric materials with the tremendous energy storage density is fundamentally important for developing pulse power capacitors. An effective approach was proposed to favorably modify properties (ESP) of Bi0.5Na0.5TiO3 ceramics using CaTiO3 incorporation. The breakdown strength effectively enhanced, and simultaneously relaxor behavior optimized lower remnant polarization, which resulted from decreased grains size introduction Ca2+ ion. Remarkably, at a doping level 0.2,...
The polymorphic structure evolution of (Ba,Ca)(Zr,Ti)O3 piezoelectric ceramics was investigated by analysis the in situ X-ray diffraction and dielectric spectra. results indicated that a confined orthorhombic (O) phase region induced approach rhombohedral (R) tetragonal (T) phases existed an extremely narrow temperature range (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 composition. electric properties near O–T boundaries (Ba0.95Ca0.05)(Zr0.05Ti0.95)O3 were compared. suggested O is important factor...
A Mn CO 3 ‐modified (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O system was synthesized by solid‐state reaction method. The phase structure, microstructure, electrical properties, and complex impedance were investigated in detail. addition of small amount quite effective to lower the sintering temperature. XRD analysis showed that single perovskite achieved all compositions. XPS results demonstrated ions present mixed valence form +2 +4. existence 2+ gave rise an increase oxygen vacancies suppressed...