Unveiling Frequency-Dependent Electromechanical Dynamics in Ferroelectric BaTiO3 Nanofilm with a Core-Shell Structure DOI Open Access

Ming-Ran Zhang,

Rui Ma,

Jianqiang Zhou

и другие.

Coatings, Год журнала: 2024, Номер 14(11), С. 1437 - 1437

Опубликована: Ноя. 12, 2024

Diverse domain patterns significantly influence the nonlinear electromechanical behaviors of ferroelectric nanomaterials, with polarization switching under strong electric fields being inherently a frequency-dependent phenomenon. Nevertheless, research in this area remains limited. In study, we present phase-field investigation dynamics polycrystalline BaTiO3 nanofilm core-shell structure, subjected to applied frequencies ranging from 1 80 kHz. Our findings elucidate microstructural mechanisms underlying observed these materials. The effect grain size and strains are also taken into account. Hysteresis butterfly loops exhibit marked change shape as frequency changes. We discuss domain-switching basis for evaluating such properties. addition, examine scaling dynamic hysteresis boundaries on structure. can observe that remnant coercive field diminish when sizes decrease 60 5 nm. A smaller yields larger percentage dielectric boundary, which “dilutes” overall ferroelectricity film. vortex structure is more likely form at low small size.

Язык: Английский

Ultrahigh Efficiency and Robust Energy Density in Simple Barium Titanate‐Based Lead‐Free Films via Nanocomposite Approach DOI Open Access
Zhengyang Kong, Xu Wang, Beibei Zhu

и другие.

Small Methods, Год журнала: 2025, Номер unknown

Опубликована: Фев. 4, 2025

Abstract Relaxor ferroelectric (RFE) films represent promising candidates for high‐performance energy storage applications miniaturized electronic devices and power systems. However, achieving substantial performance always involves complex component or structural design. Herein, we employed a nanocomposite approach to obtain ultrahigh‐efficiency robust density in simple BaTiO 3 ‐based lead‐free films. Our composition of (1‐ x )BaTiO ‐ CeO 2 (0.0 ≤ 0.5) contains only four elements (Ba, Ti, Ce O). The incorporation stiff insulating nanocomposites within matrix could disrupt the long‐range‐ordered micrometer‐size domains into short‐range‐ordered nanodomains. This disruption suppresses hysteresis delays polarization Combined with enhanced breakdown strength, this formulation yielded an ultrahigh efficiency ≈90% 45 ± J cm −3 at contents = 0.3 0.4. Meanwhile, these two 0.4 exhibit superior frequency (50 Hz kHz) thermal stability (20 °C 120 °C), demonstrating stable performance. proposed strategy opens up new avenue designing by incorporating secondary phase embedded even linear SrTiO dielectrics.

Язык: Английский

Процитировано

0
Enhanced energy storage performance in Na0.5Bi0.5(Ti,Mn)O3-SrTiO3 ferroelectric thin films via aging process DOI
Wenping Cao,

Jiabin Tu,

Nuo Xu

и другие.

Materials Today Communications, Год журнала: 2025, Номер unknown, С. 111930 - 111930

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Polymer Capacitor Films with Nanoscale Coatings for Dielectric Energy Storage: A Review DOI Open Access
Liang Cao, Rui Xi, Chen Zhou

и другие.

Coatings, Год журнала: 2024, Номер 14(9), С. 1193 - 1193

Опубликована: Сен. 15, 2024

Enhancing the energy storage properties of dielectric polymer capacitor films through composite materials has gained widespread recognition. Among various strategies for improving materials, nanoscale coatings that create structurally controlled multiphase polymeric have shown great promise. This approach garnered considerable attention in recent years due to its effectiveness. review examines surface-coated composites used storage, discussing their properties, behaviors, and underlying physical mechanisms involved storage. The thoroughly fabrication methods selection coating materials. It also explores latest advancements rational design control interfaces organic–inorganic, organic–organic, heterogeneous structures. Additionally, delves into structure–property relationships between different interfacial phases interface structures, analyzing how impact constant, breakdown strength, conduction charge transport mechanisms, density efficiency, thermal stability, electrothermal durability films. Moreover, summarizes relevant simulation offers computational insights. potential practical applications characteristics such techniques are discussed, along with existing challenges limitations. Finally, concludes a summary outlook, highlighting research directions this rapidly evolving field.

Язык: Английский

Процитировано

1
Unveiling Frequency-Dependent Electromechanical Dynamics in Ferroelectric BaTiO3 Nanofilm with a Core-Shell Structure DOI Open Access

Ming-Ran Zhang,

Rui Ma,

Jianqiang Zhou

и другие.

Coatings, Год журнала: 2024, Номер 14(11), С. 1437 - 1437

Опубликована: Ноя. 12, 2024

Diverse domain patterns significantly influence the nonlinear electromechanical behaviors of ferroelectric nanomaterials, with polarization switching under strong electric fields being inherently a frequency-dependent phenomenon. Nevertheless, research in this area remains limited. In study, we present phase-field investigation dynamics polycrystalline BaTiO3 nanofilm core-shell structure, subjected to applied frequencies ranging from 1 80 kHz. Our findings elucidate microstructural mechanisms underlying observed these materials. The effect grain size and strains are also taken into account. Hysteresis butterfly loops exhibit marked change shape as frequency changes. We discuss domain-switching basis for evaluating such properties. addition, examine scaling dynamic hysteresis boundaries on structure. can observe that remnant coercive field diminish when sizes decrease 60 5 nm. A smaller yields larger percentage dielectric boundary, which “dilutes” overall ferroelectricity film. vortex structure is more likely form at low small size.

Язык: Английский

Процитировано

1