A5043388887- Ferroelectric and Piezoelectric Materials
- Multiferroics and related materials
- Microwave Dielectric Ceramics Synthesis
- Acoustic Wave Resonator Technologies
- X-ray Diffraction in Crystallography
- Advanced X-ray Imaging Techniques
- Inorganic Chemistry and Materials
- Photorefractive and Nonlinear Optics
- Crystallography and Radiation Phenomena
- Dielectric materials and actuators
- Seismic Waves and Analysis
- Electronic and Structural Properties of Oxides
- High-pressure geophysics and materials
Xi'an Jiaotong University
2021-2025
Simon Fraser University
2021
University of Oxford
2021
University of Warwick
2021
Phase boundary provides a fertile ground for exploring emergent phenomena and understanding order parameters couplings in condensed-matter physics. In Pb(Zr1-xTix)O3, there are two types of composition-dependent phase with both technological scientific importance, i.e. morphotropic (MPB) separating polar regimes into different symmetry ferroelectric/antiferroelectric (FE/AFE) dividing antipolar dipole configurations. contrast extensive studies on MPB, FE/AFE is far less explored. Here, we...
Strontium titanate is a classic quantum paraelectric oxide material that has been widely studied in bulk and thin films. It exhibits well-known cubic-to-tetragonal antiferrodistortive phase transition at 105 K, characterized by the rotation of oxygen octahedra. A possible second lower temperature suppressed fluctuations, preventing onset ferroelectric order. However, recent studies have shown order can be established low temperatures inducing strain other means. Here, we used multireflection...
Antiferroelectric perovskites form an important family of functional electric materials, which have high potential in energy storage and conversion applications. However, a full understanding their crystal structural formation is still lacking. ${\mathrm{PbZrO}}_{3}$-based materials can serve as model system for investigation, not only because ${\mathrm{PbZrO}}_{3}$ was the first discovered antiferroelectric, but also it undergoes typical phase transition sequence from high-temperature...
PbZrO3-based antiferroelectric crystals are of great interest in both fundamental and applied research, not only because the feature at room temperature but also existence a peculiar intermediate state elevated temperatures. Here, we report detailed description domain structure change temperature-induced antiferroelectric-to-ferroelectric phase transition. A complex process different types domains is revealed to appear stages hierarchical ferroelastic forms stabilized state, where dense...
$\mathrm{Pb}{\mathrm{Zr}}_{1\ensuremath{-}x}{\mathrm{Ti}}_{x}{\mathrm{O}}_{3}$ exhibits an antiferroelectric-ferroelectric phase boundary at the composition $x\ensuremath{\sim}0.06$. Around this boundary, several questions need to be answered, such as stabilizations of different phases with a small amount compositional difference, sequence transitions, coexistence crystal structures, and potential applications. In work, we have carried out systematic structural investigations single crystals...
Domain boundaries in ferroic materials are found to have various physical properties not observed the surrounding domains. Such differences can be enhanced and bring promising functionalities when centrosymmetric nonpolar encounter polar domain boundaries. In this work, a tunable boundary is discovered an antiferroelectric single crystal. Under small stress or electric field, density, volume, polarity of successfully controlled.
Abstract Relaxor ferroelectrics possess prominent dielectric and piezoelectric properties thus have been utilized in many advanced electromechanical devices. However, the atomic‐scale mechanism of their excellent remains vague, which hinders development high‐performance ferroelectrics. In this work, we investigated lattice parameter fluctuations for Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO relaxor ferroelectric ceramics, with a comparison non‐relaxor including BaTiO , SrTiO Pb(Zr,Ti)O at respective...
The existence of polar nanoregions (PNRs) which are widely accepted as a key factor contributing to ultrahigh piezoelectricity in relaxor-ferroelectric solid solutions is found originate from local displacive correlations.
Well-defined polymorph transformation sequences and novel tetragonal twin-domain patterns are found in the MPB of Dy-modified BiFeO 3 –PbTiO single crystals.
Strontium titanate is a classic quantum paraelectric oxide material that has been widely studied in bulk and thin films. It exhibits well-known cubic-to-tetragonal antiferrodistortive phase transition at 105 K, characterized by the rotation of oxygen octahedra. A possible second lower temperature suppressed fluctuations, preventing onset ferroelectric order. However, recent studies have shown order can be established low temperatures inducing strain other means. Here, we used situ...
Antiferroelectric perovskites form an important family of functional electric materials, which have high potential in energy storage and conversion applications.However, a full understanding their crystal structural formation is still lacking.PbZrO3-based materials can serve as model system for investigation, not only because PbZrO3 was the first discovered antiferroelectric, but also it undergoes typical phase transition sequence from high-temperature paraelectric to low-temperature...