Results 51 to 60 of about 324,033 (358)

Strong ferroelectric and luminescence properties of 0–3 type 0.8BaTiO3–0.2CaTiO3:Pr3+ composite ceramics prepared by cold sintering process

Journal of Advanced Ceramics
0–3 type ferroelectric–phosphor composite ceramics cannot be prepared by the traditional solid-state sintering (SSS) method due to the strong chemical reaction between ferroelectrics and phosphors during high-temperature sintering.
Xiaocui Rao, Xueling Yang, Renbing Sun, Peng Du, Hai Jiang, Yao Huang, Laihui Luo   +6 more
doaj   +1 more source

BS0.5BNT-based relaxor ferroelectric ceramic/glass–ceramic composites for energy storage

Journal of Advanced Ceramics, 2023
Relaxor ferroelectric ceramics have very high dielectric constant (εr) but relatively low electrical breakdown strength (Eb), while glass–ceramics exhibit higher Eb due to the more uniformly dispersed amorphous phases and submicrocrystals/nanocrystals ...
Xuhai Shi, Kai Li, Zong-Yang Shen, Junqi Liu, Chaoqun Chen, Xiaojun Zeng, Bo Zhang, Fusheng Song, Wenqin Luo, Zhumei Wang, Yueming Li   +10 more
doaj   +1 more source

The polarization process of ferroelectric materials analyzed in the framework of variational inequalities

, 2020
We are concerned with the mathematical modeling of the polarization process in ferroelectric media. We assume that this dissipative process is governed by two constitutive functions, which are the free energy function and the dissipation function.
Humer, Alexander, Meindlhumer, Martin, Pechstein, Astrid S.   +2 more
core   +1 more source

The electric field-induced antiferroelectric to ferroelectric phase transition in some (Pb,La)Zr0.55Ti0.45O3 ceramics [PDF]

, 1976
Lanthanum substituted lead zirconate-titanate (PLZT) ceramics of composition 11.1/55/45 have been studied by measuring high electric field properties. Dc bias, dielectric and P-E hysteresis loop measurements have been employed to construct an E (electric
Burggraaf, A.J., Thieme, C.L.H., Wolters, M.   +2 more
core   +2 more sources

Polaronic and Electrochemical Signatures in Group IVB (Ti, Zr, Hf) Oxides: Unified SKP–DFT Insights for Tunable Transport in Energy and Electronic Devices

Advanced Functional Materials, EarlyView.
Charge carrier concentration and mobility in TiO2, ZrO2, and HfO2 powder films are experimentally mapped as a function of temperature. The results uncover polaron‐mediated transport regimes and field‐activated conduction, enabling the design of oxide‐based electronic and energy devices with thermally tunable functionality.
Beatriz Moura Gomes, Júlia Holtz, Maria Luís Pinto, Maria Helena Braga   +3 more
wiley   +1 more source

Pyroelectric performance, dielectric response and conductive mechanism of BCHT lead-free piezoelectric ceramics via powder injection molding

Journal of Materials Research and Technology, 2020
Lead zirconate titanate (PZT) ceramics exhibit excellent piezoelectric performance, which expands piezoelectric applications scope. However, the usage of toxic PbO causes serious harm to humans and ecological environment.
Can Wang, Bijun Fang, Dun Wu, Shuai Zhang, Jianning Ding   +4 more
doaj   +1 more source

Quantitative evaluation of the piezoelectric response of unpoled ferroelectric ceramics from elastic and dielectric measurements: tetragonal BaTiO$_3$

, 2017
A method for evaluating the piezoelectric response of unpoled ferroelectric ceramics from elastic and dielectric measurements is proposed and tested on BaTiO$_3$.
Cordero, F.
core   +1 more source

Dispersion of Switching Processes in Ferroelectric Ceramics [PDF]

Advances in Condensed Matter Physics, 2017
The influence of the switching processes on self-heating of ferroelectric PZT ceramics samples was studied in high-amplitude sine and meander electric fields in a wide frequency range of 50 to 1500 Hz. It is shown that the linear dependence of the self-heating temperature on the electric field frequency is observed only in low-frequency region.
O. V. Malyshkina, Anton Yurievich Eliseev, R. M. Grechishkin   +2 more
openaire   +3 more sources

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

Coupled Ferroelectric–Photoelectrochemical in Water Reduction Over BiFeO3 Thin Film Heterostructure Modulated by Rare‐Earth Doping

Advanced Functional Materials, EarlyView.
Gd‐doped BFO (BGFO) exhibits a ∼2‐order reduction in leakage current owing to its lowest content of oxygen vacancies. This leads to a ∼2.5‐fold increase in remnant polarization. These improvements in BGFO effectively boost charge separation and transportation, resulting in the greatest incident photon‐to‐current efficiency of 12.9 ± 0.73% and a ∼1.5 ...
Ming‐Wei Chu, Narong Chanlek, Cheng‐Sao Chen, Pin‐Yi Chen, Kuei‐Chih Feng, Chi‐Shun Tu, Chang Fu Dee, Wei Sea Chang   +7 more
wiley   +1 more source