A5023231439- Ferroelectric and Piezoelectric Materials
- Multiferroics and related materials
- Acoustic Wave Resonator Technologies
- Microwave Dielectric Ceramics Synthesis
- Dielectric materials and actuators
- Advanced ceramic materials synthesis
- Advanced Sensor and Energy Harvesting Materials
- Electronic and Structural Properties of Oxides
- Aluminum Alloys Composites Properties
- Perovskite Materials and Applications
- Numerical methods in engineering
- Advanced Photocatalysis Techniques
- Catalytic Processes in Materials Science
- Mesoporous Materials and Catalysis
- Epoxy Resin Curing Processes
- Magnetic and transport properties of perovskites and related materials
- Structural Load-Bearing Analysis
- High-Velocity Impact and Material Behavior
- Dielectric properties of ceramics
- Calcium Carbonate Crystallization and Inhibition
- Polymer composites and self-healing
- Advanced materials and composites
- MXene and MAX Phase Materials
- Electrical and Thermal Properties of Materials
- Non-Destructive Testing Techniques
Harbin Institute of Technology
2016-2025
Jilin University
2024
Dalian Maritime University
2024
Heilongjiang Institute of Technology
2022-2023
Wuhan Engineering Science & Technology Institute
2014-2021
Harbin University
2018-2020
Pennsylvania State University
2009-2019
Dalian Polytechnic University
2018-2019
Virginia Tech
2012
Shaanxi Normal University
2005-2011
Both low strain hysteresis and high piezoelectric performance are required for practical applications in precisely controlled devices systems. Unfortunately, enhanced properties were usually obtained with the presence of a large BaTiO3 (BT)-based piezoceramics. In this work, we propose to integrate crystallographic texturing domain engineering strategies into BT-based ceramics resolve challenge. [001]c grain-oriented (Ba0.94Ca0.06)(Ti0.95Zr0.05)O3 (BCTZ) texture degree as 98.6% synthesized...
The piezoelectric properties of lead zirconate titanate [Pb(Zr,Ti)O3 or PZT] ceramics could be enhanced by fabricating textured that would align the crystal grains along specific orientations. We present a seed-passivated texturing process to fabricate PZT using newly developed Ba(Zr,Ti)O3 microplatelet templates. This not only ensures template-induced grain growth in titanium-rich layers but also facilitates desired composition through interlayer diffusion zirconium and titanium....
Abstract The figure-of-merits of ferroelectrics for transducer applications are their electromechanical coupling factor and the operable temperature range. Relaxor-PbTiO 3 ferroelectric crystals show a much improved k 33 (88~93%) compared to ceramic counterparts (65~78%) by taking advantage strong anisotropy crystals. However, only few relaxor-PbTiO systems, example Pb(In 1/2 Nb )O -Pb(Mg 1/3 2/3 -PbTiO , can be grown into single crystals, whose range is limited rhombohedral-tetragonal phase...
Abstract [001] C ‐Textured 0.55Pb(Ni 1/3 Nb 2/3 )O 3 –0.15PbZrO –0.3PbTiO (PNN‐PZT) ceramics are prepared by the templated grain‐growth method using BaTiO (BT) platelet templates. Samples with different template contents fabricated and compared in terms of texture fraction, microstructure, piezoelectric, ferroelectric dielectric properties. High piezoelectric performance ( d 33 = 1210 pC N −1 , * 1773 pm V at 5 kV cm ) high figure merit g ⋅ (21.92 × 10 −12 m 2 achieved ‐textured PNN‐PZT...
High-performance piezoelectrics are pivotal to various electronic applications including multilayer actuators, sensors, and energy harvesters. Despite the presence of high Lotgering factor F001, two key limitations today's relaxor-PbTiO3 textured ceramics low piezoelectric properties relative single crystals texture temperature. In this work, Pb(Yb1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PYN-PMN-PT) with F001 ∼ 99% were synthesized at only 975 °C through liquid-phase-assisted templated grain...
Polyetherimide nanocomposites with core–shell structured (Pb, La)(Zr, Sn, Ti)O 3 @Al 2 O antiferroelectric nanoparticle fillers deliver an ultra-high discharged energy density of 10.2 J cm −3 and a large efficiency 83.5% at 150 °C.
⟨ 001 ⟩ -oriented (K0.5Na0.5)(Nb0.97Sb0.03)O3 (KNNS) ceramics with a narrow orientation distribution (full width at half maximum=7.0°) were produced by templated grain growth using NaNbO3 templates. Excellent electromechanical properties obtained from −70 °C to the polymorphic phase transition (PPT) 160 °C. Textured KNNS show very high coupling factors kp=0.64 and k31=0.37, piezoelectric constants d33=208–218 pC/N d31=−82 pC/N, modest strain hysteresis (6.3%) room temperature. These are...
Lead-free (K0.44Na0.52Li0.04)(Nb0.96−xTaxSb0.04)O3 piezoelectric ceramics have been synthesized by conventional solid state sintering process. Two morphotropic phase boundaries (MPBs) respectively corresponding to the orthorhombic tetragonal and pseudocubic phases are observed with increasing x. The x=0.20 between two MPBs show significantly enhanced electrical properties, which as follows: constant d33=252pC∕N, planar coupling coefficient kp=0.42, dielectric εr=1503, loss tanδ=0.025, they...
[001] oriented relaxor based ternary Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) ceramics were fabricated by templated grain growth. The effects of BaTiO3 template amount on the orientation degree, microstructure, and resulting changes in dielectric, piezoelectric, ferroelectric properties PIN-PMN-PT investigated. A high texture fraction 93% was achieved at 5 vol. % template. Giant electromechanical (d33* = 1555 pC/N, d33 824 kp 0.81) (Ec 8.3 kV/cm Pr 31 μC/cm2) obtained from those...
Energy-harvesting utilizing piezoelectric materials has recently attracted extensive attention due to the strong demand of self-powered electronics. Unfortunately, low power density and poor long-term stability seriously hinder implementation lead-free piezoelectrics as high-efficiency energy harvesters. For first time, we demonstrate that tailoring grain orientations ceramics via templated growth can effectively produce ultrahigh generation performance excellent endurance against...
Abstract Piezocatalysis is capable of harnessing mechanical energy for environmental remediation, which regarded as a green and promising technology to be exploited. Piezoceramics are struggling used highly efficient piezocatalysts due their grain size reaching tens micrometers usually. Herein, feasible straightforward method proposed turn piezoceramic powders into by integrating optimization oxygen vacancy modulation. This strategy validated treating lead‐free Sr 0.5 Ba Nb 2 O 6 (SBN) with...
Lead-free [(K0.458Na0.542)0.96Li0.04] (Nb1−xTax)O3 ceramics were prepared by ordinary sintering technique. The effects of Ta content on the phase transitional behavior, Raman spectrum, microstructure, and dielectric, piezoelectric, ferroelectric properties investigated. X-ray diffraction results indicate that structure undergoes a transition from orthorhombic to tetragonal with increase in x. small large peaks observed spectra can all be attributed internal modes NbO6 octahedron, both ν5 ν1...
In this work, we report the electromechanical properties of 〈00l〉C-textured (K0.5Na0.5)0.98Li0.02NbO3 (KNLN) and (K0.5Na0.5)(Nb0.85Ta0.15)O3 (KNNT) ceramics produced by templated grain growth. Both materials show high texture quality (F00l=98% full-width at half-maximum [FWHM]=8.4° for KNLN, F00l=99%, FWHM=7.6° KNNT) enhanced piezoelectric response compared with randomly oriented ceramics. However, textured KNLN shows higher (d33=192 pC/N, kp=0.63, k31=0.39, d31=−73 d33*=208 pC/N) phase...
The kinetics of topochemical and morphological conversion platelet-shaped Na3.5Bi2.5Nb5O18, PbBi4Ti4O15, BaBi4Ti4O15 Aurivillius phases to NaNbO3, PbTiO3, BaTiO3 perovskites were studied. Reaction the ⟨001⟩ oriented with excess Na2CO3, Pb3(CO3)2(OH)2, BaCO3, respectively, yielded high-aspect-ratio perovskite microcrystals orientation. Only Na3.5Bi2.5Nb5O18 NaNbO3 occurred directly, whereas TEM analysis reacted PbBi4Ti4O15 revealed previously unknown Aurivillius-type intermediate Bi2O22+...
The structure, ferroelectric and piezoelectric properties of $\ensuremath{\langle}001\ensuremath{\rangle}$ textured (K${}_{0.5}$Na${}_{0.5}$)${}_{0.98}$Li${}_{0.02}$NbO${}_{3}$ ceramics were investigated as a function temperature dc bias $E$. X-ray diffraction revealed an orthorhombic ($O$) \ensuremath{\rightarrow} tetragonal ($T$) polymorphic phase boundary (PPB). Phase coexistence was found near the PPB over 30 \ifmmode^\circ\else\textdegree\fi{}C range, where relative volume fractions...
In this work, both crystallographic texture and doping engineering strategies were integrated to develop relaxor-PbTiO3 (PT) based ternary ferroelectric ceramics with enhanced evolution superior electromechanical properties. CuO-doped Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) piezoelectric [001]c fraction ≥97% synthesized by templated grain growth. The addition of CuO significantly promotes densification oriented growth in the ceramics, leading full development at dramatically...
Novel 0–3 type (Ba, Ca)(Ti, Sn)O<sub>3</sub>/BaTiO<sub>3</sub> lead-free piezocomposites with ∼560% enhanced energy harvesting performance were developed by integrating crystallographic texture and composite design strategies.
We demonstrate a facile method to produce crystallographically textured, macroporous materials using combination of modified ice templating and templated grain growth (TGG). The process is demonstrated on alumina the lead-free piezoelectric material sodium potassium niobate. provides with aligned, lamellar ceramic walls which are made up aligned grains. Each showed that present long-range order over entire sample dimensions have crystallographic texture as result TGG process. also...