A5042839874- Ferroelectric and Piezoelectric Materials
- Metallic Glasses and Amorphous Alloys
- Acoustic Wave Resonator Technologies
- Multiferroics and related materials
- Microwave Dielectric Ceramics Synthesis
- Electromagnetic wave absorption materials
- High Entropy Alloys Studies
- Shape Memory Alloy Transformations
- Earthquake Detection and Analysis
- Thermal and Kinetic Analysis
- Geophysics and Sensor Technology
- Dielectric materials and actuators
- Aluminum Alloy Microstructure Properties
- Nanomaterials for catalytic reactions
- Inorganic Fluorides and Related Compounds
- Electronic and Structural Properties of Oxides
- Phase-change materials and chalcogenides
- Bauxite Residue and Utilization
- Adsorption and biosorption for pollutant removal
- Material Dynamics and Properties
- High-pressure geophysics and materials
- Environmental remediation with nanomaterials
- Microstructure and Mechanical Properties of Steels
- Aluminum Alloys Composites Properties
- Photorefractive and Nonlinear Optics
Guilin University of Technology
2024
Université de Lyon
2024
Laboratoire de Mécanique des Contacts et des Structures
2024
Xi'an Jiaotong University
2015-2022
China XD Group (China)
2018
Nanchang Hangkong University
2014
Sichuan University
2011
Monash University
1995
Although extensive studies have been done on lead-free dielectric ceramics to achieve excellent behaviors and good energy storage performance, the major problem of low density has not solved so far. Here, we report designing crossover relaxor ferroelectrics (CRFE), a region between normal ferroelectrics, as solution overcome density. CRFE exhibits smaller free lower defect in modified Landau theory, which helps obtain ultrahigh efficiency. The (1-x)Ba0.65Sr0.35TiO3-xBi(Mg2/3Nb1/3)O3...
In ferroelectric and relaxor-ferroelectric materials, piezoelectric dielectric properties are significantly enhanced at the morphotropic phase boundary (MPB), a between different phases with macroscopic symmetries. By contrast, in relaxor systems, such an MPB does not exist because relaxors of compositions possess same symmetry. Here, we report existence (MRB) single region ${\mathrm{K}}_{0.5}{\mathrm{Na}}_{0.5}{\mathrm{NbO}}_{3}\text{\ensuremath{-}}x{\mathrm{BaTiO}}_{3}$ system, which is...
BT-13CH exhibits a large electrocaloric effect over broad temperature range because of multiphase coexistence (MPC) with diffuse phase transition (DPT) character.
A strain glass state was found to be located between B2-B19' (cubic monoclinic) phase transition and B2-R rhombohedral) in Ti49Ni51 alloys after aging process. After a short time aging, strong observed, because the size of precipitates is small, which means field induced by isotropic point-defect-like distribution random. long average increases. The around them forces symmetry matrix materials conform crystalline structure precipitates, results new transition. experiment shows that there...
In ferroelectric materials the maximum electrostrain effect usually occurs at a phase boundary (often referred to as ``morphotropic boundary'') between two or more different phases due lattice instability such compositions. As result it is not expected that can appear in single regime which away from instability. this Rapid Communication we report an unexpected finding rhombohedral region of...
Ferrous shape memory alloy, Fe41Ni28Co17Al11.5Ta2.5B0.05, has shown large superelastic strain and strength in previous study. In the fabrication of this aging process is crucial for formation effect/superelasticity. However, its phase evolution on time not clearly known. study, we systematically studied diagram alloy time. It found that unaged shows a glass transition. With proceeding, martensitic transformation gradually emerges. The can be explained by coherent precipitates induced aging....
A large electrostrain of ∼0.245% emerged in an intrinsic-acceptor-doped morphotropic phase boundary (MPB) system Ba(Ce0.1Ti0.9)O3–x(Ba0.7Ca0.3)TiO3 under electric field 30 kV/cm at 0.1 Hz. It is almost twice as that hard lead zirconate titanates and larger than the strains other barium-titanate-based systems with either aging effect or MPB effect. This induced by coupling composition. More interestingly, it found that, different from aged single-phase samples, sample shows a more obvious...
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The amorphous phase and strain glass are both disordered states of solids. is an atomic packing phase, while a glassy state with transformation disorder in crystalline matrix, which bring extraordinary properties to alloys. Previous studies have mostly focused on the structure single glass; however, link between them has seldom been considered. In this work, specimen almost was obtained from heavy-defects-doping Fe67.8Pd32.2 ingot by arc melting 90% cold rolling, were characterized packages...